2007 ISUZU KB P190 engine

Battery Page 6D1-3–11

b W ait 15 seconds for the battery to recover.
8 If possible, set the selector to 50% of rapid discharge current (or three times the 20 hour discharge rate).
9 Apply the load test for 10 seconds and record the battery voltage. If one cell is faulty it will gas excessively or overheat. This indicates a faulty battery.
10 Recharge the battery if the voltage is at or below the minimum voltage specified by the HRD manufacturer (or 9.6 V).
11 Replace the battery if the voltage is below the minimum voltage specified by the HRD manufacturer (or below 9.6 V after the battery is charged and the test is repeated). Refer to 4.1 Battery.
12 Connect the battery positive terminal.
13 Connect the battery negative terminal.
Alternate Load Test
If HRD test equipment is not available, test the battery as follows:
1 Read and obey the safety precautions for working with batteries, refer to 2 Safety Precautions.
2 Ensure the state of the battery is at least 65% charged. Refer to 3.3 Hydrometer Test.
3 Connect a voltmeter (1) between the battery terminals.
4 Turn the headlights on to high-beam for 10 seconds to remove any surface charge from the battery.
5 Remove fuses EB11 and EB12 from the engine compartment fuse and relay housing. This prevents
vehicle ignition and fuel injection while cranking the
engine.
6 Crank the engine and read the voltmeter. At temperatures above 5°C, the voltage of a fully charged
battery should not fall below 9.6 V.
NOTE
• If the battery and engine temperatures are
below 5 °C, the voltage may fall to 9 V.
• Try to avoid activating the starter motor
continuously for more than 30 seconds. If
activating the starter motor for 30 seconds,
allow the starter motor to cool for 3 minutes.
7 Replace the battery if a cell gasses excessively or overheats or if the voltage falls away quickly.
Figure 6D1-3 – 6
3.5 Battery Current Draw Test
The following test determines if excess current is being drawn from the battery whilst the vehicle has all accessories
turned off. Excess current draw will cause the battery to go flat if the vehicle is not started for an extended period.
Test Preparation
1 Read and obey the safety precautions for working with batteries, refer to 2 Safety Precautions.
2 If the battery is flat, temporarily install a good battery for the duration of the test.
3 Ensure the vehicle starts and the accessories operate normally.
4 Ensure the theft deterrent system operates normally. Refer to 11A Immobiliser.
5 Open all the side windows for access purposes.
6 Switch the ignition off.
7 Check that all interior illumination is off, including any compartment lighting.
8 Close all doors.

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ISUZU KB P190 2007

Battery Page 6D1-3–12

9 Lock the doors and activate the theft deterrent system to arm the vehicle.
10 If the multimeter contains fuses, check they are serviceable.
Test Procedure
1 Switch the multimeter to the mA current range (1).
2 Connect the positive test lead (2) to the fused mA terminal of the multimeter.
3 Connect the negative test (3) lead to the common terminal of the multimeter.
4 Connect large alligator clips to the ends of both test leads.
Figure 6D1-3 – 7
5 Connect the negative test lead clip to the threads of the battery negative terminal clamp (1).
6 Connect the positive lead’s clip to the threads of a convenient engine bolt (2).

Do not turn on the ignition switch while this
test is in progress. It will blow the
multimeter’s low current fuse.
7 Check the multimeter connections are secure.
8 Disconnect the vehicle’s main electrical earth by removing the battery negative terminal cable retaining
nut (3) and separating the cable from the battery
clamp.
Figure 6D1-3 – 8
9 Read the vehicle’s battery saver current on the multimeter. The multimeter reading should be within 16 – 30 mA (fluctuating).
10 If the multimeter reading is higher than specified, refer to Fault Diagnosis in this Section, otherwise restore the vehicle to its prior condition, refer to Restore in this Section.
Fault Diagnosis

Do not open any doors during this inspection.
If the doors must be opened, reinstall the
battery terminal to the battery clamp to
protect the multimeter's fuse from blowing.
Alternatively, use the higher (10 A) fuse rated
terminal on the multimeter until the source of
the higher current draw has been found.
1 Visually inspect the vehicle for illuminated lamps and components activated by energised relays.
2 If the cause of the excessive current draw is not apparent, remove one fuse (or circuit breaker) at a time to determine the circuit group that is drawing excess current. Refer to 8A Electrical Body & Chassis for fuse grouping
location.

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ISUZU KB P190 2007

Battery Page 6D1-3–14

4 Service Operations
4.1 Battery
Remove

Disconnection of the battery affects certain
vehicle electronic systems. Refer to 1.1
WARNING, CAUTION and NOTES before
disconnecting the battery.
1 Read and obey the safety precautions for working with batteries, refer to 2 Safety Precautions.
2 Disconnect the negative battery terminal (1).
3 Disconnect the positive battery terminal (2).
4 Remove the battery hold-down bolts (3 & 4) three places, and the battery hold-down bracket (5).
5 Lift the battery out of the engine compartment.
Figure 6D1-3 – 9
Reinstall
NOTE
Before installing a used battery perform steps 1
to 10 of the battery inspection, refer to 3.2
Battery Inspection.
1 Ensure the battery tray, cables and terminals are clean and free from corrosion and moisture.
2 Ensure that no foreign objects such as loose nuts or stones are located in the battery tray.
3 Place the battery onto the battery tray and ensure the battery sits level.
4 Install the battery hold down bracket and tighten the bolt to the specified torque. Battery hold-down bolt
torque specification ...................................8.0 – 10.0 Nm

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ISUZU KB P190 2007

Battery Page 6D1-3–17

4 Turn off the ignition, lights and all other electrical loads.
5 Check the battery filler caps on both batteries are tight.
6 Place a wet cloth over the battery filler caps of each battery.
7 Attach one end of the red jumper cable to the positive terminal of the booster battery.
8 Attach the other end of the same cable to the positive terminal of the discharged battery.
9 Attach one end of the black jumper cable to the negative terminal of the booster battery.
10 Attach the other end to a solid stationary, metallic point on the engine of the disabled vehicle.
NOTE
Do not connect this end directly to the negative
post of the discharged battery.

Figure 6D1-3 – 10
Legend
Order of hook-up:
1 Booster vehicle, positive terminal
2 Disabled vehicle, positive terminal
3 Booster vehicle, negative terminal
4 Disabled vehicle, engine ground point Booster vehicle
Disabled vehicle

11 Ensure the jumper cables are not on or near drive pulleys, cooling fans or other points that will move when the engine is started.
12 Start the engine in the booster vehicle and run the engine at a moderate speed for a few minutes.
13 Start the engine in the disabled vehicle.
NOTE
If the engine in the disabled vehicle does not start
within 30 seconds, stop cranking the engine and
fix the cause. Refer to 3 Diagnosis.
14 W hen the engine starts, allow both engines to idle for approximately seven minutes. This allows the voltage levels in both vehicles to balance.
15 Leave the vehicles running and remove the jumper cables in the reverse sequence to attaching them. W hen removing each clamp, take care to ensure that it does not touch any other metal.
16 Discard the wet cloths covering the battery filler caps of both batteries.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–1

6E1
Powertrain Interface Module – V6
ATTENTION
Before performing any service operation or other procedure described in this Section, refer to 1.2 Warning
Caution and Notes for correct workshop practices with regard to safety and / or property damage.
1 General Information ............................................................................................................ ...................6
1.1 General Description ............................................................................................................ ................................... 6
Serial Data Communication .................................................................................................................................. 6
Serial Data Layout.................................................................................................................................................. 8
1.2 Warning Caution and Notes .................................................................................................................................. 8
Definition of WARNING, CAUTION and NOTE Statements ............................................................................. .... 8
2 Component Location............................................................................................................................10
2.1 Engine Compartment............................................................................................................. .............................. 10
2.2 Interior................................................................................................................................................................... 11
3 Component Description and Operation ............................................................................................ .12
3.1 Powertrain Interface Module ............................................................................................................................... 12
3.2 Powertrain Interface Module Gateway Components ................................................................................. ....... 13
Engine Control Module........................................................................................................................................ 13
Immobiliser Control Unit ..................................................................................................................................... 13
Automatic Transmission Control Module .......................................................................................... ................ 13
3.3 Powertrain Interface Module Direct Input Switches.............................................................................. ............ 14
Cruise Control Switch.......................................................................................................................................... 14
Power Mode Switch – Automatic Transmission..................................................................................... ........... 14
3rd Start Switch – Automatic Transmission ....................................................................................................... 14
4 Diagnostics ...........................................................................................................................................15
4.1 Diagnostic General Descriptions................................................................................................ ........................ 15
Diagnostic Trouble Code (DTC) Tables........................................................................................... ................... 15
Diagnostic Trouble Codes (DTCs) ...................................................................................................................... 15
Tech 2 PIM Diagnostic Tests............................................................................................................................... 16
5 GM LAN Serial Communication Circuit ............................................................................................ ..17
6 Wiring Diagram and Connector Chart ................................................................................................18
6.1 Wiring Diagrams .................................................................................................................................................. 18
6.2 Connector Chart................................................................................................................................................... 20
6.3 Connector Information .......................................................................................................... .............................. 21
PIM Connector Pin Specifications ............................................................................................... ....................... 21
7 Diagnostics Starting Point ..................................................................................................................24
7.1 Diagnostic Requirements, Precautions and Preliminary Checks .................................................................... 24
Basic Knowledge Required ................................................................................................................................. 24
Basic Diagnostic Tools Required ................................................................................................ ....................... 24
Diagnostic Precautions ....................................................................................................................................... 24
Preliminary Checks.............................................................................................................................................. 25
7.2 Diagnostic System Check ........................................................................................................ ........................... 25
7.3 Powertrain Interface Module – Module Communication Check Failure Diagnostic Table............................. 27

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Powertrain Interface Module – V6 Page 6E1–2

8 Intermittent Fault Conditions ..............................................................................................................29
8.1 Intermittent Conditions Diagnostic Table ....................................................................................... ................... 29
Description ........................................................................................................................................................... 29
Diagnostic Table .................................................................................................................................................. 29
9 DTC Tables ............................................................................................................................................31
9.1 DTC C0550 – PIM Internal Fault ................................................................................................. ......................... 31
DTC Description ................................................................................................................................................... 31
Circuit Description ............................................................................................................................................... 31
Additional Information......................................................................................................... ................................ 31
Conditions for Running the DTC ................................................................................................. ....................... 31
Conditions for Setting the DTC........................................................................................................................... 31
Action Taken When the DTC Sets ................................................................................................. ..................... 31
Conditions for Clearing the DTC ........................................................................................................................ 31
Test Description ................................................................................................................................................... 31
DTC C0550 Diagnostic Table ..................................................................................................... ......................... 32
9.2 DTC U2100 – No Communication With CAN Bus (High Speed) ....................................................................... 32
DTC Description ................................................................................................................................................... 32
Circuit Description ............................................................................................................................................... 32
Additional Information......................................................................................................... ................................ 32
Conditions for Running the DTC ................................................................................................. ....................... 33
Conditions for Setting the DTC........................................................................................................................... 33
Action Taken When the DTC Sets ................................................................................................. ..................... 33
Conditions for Clearing the DTC ........................................................................................................................ 33
Test Description ................................................................................................................................................... 33
DTC U2100 Diagnostic Table ..................................................................................................... ......................... 33
9.3 DTC U2105 – CAN Bus No Communication With Engine Control Module ...................................................... 35
DTC Description ................................................................................................................................................... 35
Circuit Description ............................................................................................................................................... 35
Additional Information......................................................................................................... ................................ 35
Conditions for Running the DTC ................................................................................................. ....................... 35
Conditions for Setting the DTC........................................................................................................................... 35
Action Taken When the DTC Sets ................................................................................................. ..................... 35
Conditions for Clearing the DTC ........................................................................................................................ 36
Test Description ................................................................................................................................................... 36
DTC U2105 Diagnostic Table ..................................................................................................... ......................... 36
9.4 DTC U2106 – CAN Bus No Communication With Transmission Control Module........................................... 38
DTC Description ................................................................................................................................................... 38
Circuit Description ............................................................................................................................................... 38
Additional Information......................................................................................................... ................................ 38
Conditions for Running the DTC ................................................................................................. ....................... 38
Conditions for Setting the DTC........................................................................................................................... 38
Action Taken When the DTC Sets ................................................................................................. ..................... 38
Conditions for Clearing the DTC ........................................................................................................................ 38
Test Description ................................................................................................................................................... 38
DTC U2106 Diagnostic Table ..................................................................................................... ......................... 39
9.5 DTC B0565 – Coolant Temperature Gauge Circuit High Current ..................................................................... 40
9.6 DTC B0575 – Fuel Gauge Circuit High Current ................................................................................................. 40
9.7 DTC B3598 – Cruise Control Cancel Signal Malfunction........................................................................... ....... 41
DTC Description ................................................................................................................................................... 41
Circuit Description ............................................................................................................................................... 41
Additional Information......................................................................................................... ................................ 41
Conditions for Running the DTC ................................................................................................. ....................... 41
Conditions for Setting the DTC........................................................................................................................... 41
Action Taken When the DTC Sets ................................................................................................. ..................... 41
Conditions for Clearing the DTC ........................................................................................................................ 41
Test Description ................................................................................................................................................... 42
DTC B3628 Diagnostic Table ..................................................................................................... ......................... 42
9.8 DTC B3627 – Cruise Control Resume Signal Malfunction........................................................................... ..... 43

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Powertrain Interface Module – V6 Page 6E1–6

1 General Information
A powertrain interface module (PIM) is fitted that incorporates the following functionality:
• Communication protocol between the engine control module (ECM) and transmission control module (TCM) is
General Motors Local Area Network (GM LAN).
• Communication protocol between the PIM and immobiliser control unit is keyword 2000.
• ECM to PIM and PIM to immobiliser control unit (ICU) authentication for vehicle security.
• The following switches, where fitted, input directly into the PIM:
• Automatic transmission power mode switch.
• Automatic transmission 3
rd gear start switch.
• Cruise control switch.
1.1 General Description
Serial Data Communication
The various electronic control modules communicate with each other through the serial data bus. The ECM and TCM
communicate on the serial data bus using the GM LAN communication protocol. Figure 6E1 – 2 shows the serial data
layout.
NOTE
Serial data components shown in Figure 6E1 – 2
will vary depending on vehicle options.
Bus
A bus is a physical circuit or circuits which provides a communication path between two or more control modules.
GM LAN Serial Data Bus
The GM LAN bus is a two wire circuit (1), refer to Figure 6E1 – 1. The GM LAN bus circuits are terminated with cut-off
resistors (2) which are located inside the two control modules at either end of the bus circuit. The purpose of these cut-off
resistors is to prevent data from returning as an echo after reaching the end of the GM LAN bus circuit.
NOTE
• For illustration purposes, the cut-off resistors
are shown outside of the control modules.
• The two control modules with the cut-off
resistors are the PIM and the ECM.

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Powertrain Interface Module – V6 Page 6E1–7


Figure 6E1 – 1
Legend
1 CAN Bus Lines
2 Cut-off Resistors (resistors are integrated into the PIM and ECM)
3 Powertrain Interface Module (PIM) 4 Transmission Control Module (TCM)
5 Engine Control Module (ECM)
Serial Data
W hen information is sent from one control module to another via the serial data bus, the information sent is known as
serial data. Serial data in its electronic form, is made up of rapidly changing high to low voltage pulses strung together.
Each string of voltage pulses represents a message.
• GM LAN serial data has two data lines along which serial data is sent. These lines are known as CAN_HI and
CAN_LO.
• CAN HI – The CAN HI data line is a 3.6 V data line that toggles the voltage between 2.5 V and 3.6 V
(referenced to ground). W hen there is no communication on the CAN HI data line, the system voltage
is 2.5 V.
• CAN LO – The CAN LO data line is a 2.5 V data line that toggles the voltage between 2.5 V and 1.4 V
(referenced to ground). W hen there is no communication on the CAN LO data line, the system voltage
is 2.5 V.
Serial Data Communication Protocols
General Motors Local Area Network (GM LAN)
GM LAN is a communication protocol based on the Controller Area Network physical layer. The main difference between
GM LAN and CAN is the way in which the messages are structured.

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