2007 ISUZU KB P190 check engine

ELECTRICAL-BODY AND CHASSIS 8A-369
Low Fuel Indicator Light
1. Disconnect the fuel gauge unit wire connector.
2. Turn the key switch on. Check that the bulb lights.
If operation is not correct, remove and check the bulb or circuit.
or If check whether low fuel turns on fuel input (B-24) at the
time of open and key on.
∗ meter is check at low fuel



RTW 78ASH001501




Check level sensor operation
1. Remove the fuel gauge unit.
2. Apply battery voltage between terminal (B) and (C) through a 1.12 watt bulb. Check that the bulb lights.
Note:
It will take a short time for the bulb light.
3. Submerge the sensor in fuel. Check that the bulb goes out.
If operation is not correct, replace the fuel tank unit.

BRAKE SYSTEM WARNING LIGHT
The brake system warning light comes on while the parking
brake is set and the engine run position.

RTW 48AMH000101


Note:
The parking brake indicator light circuit is designed to
prevent driving of the vehicle with the parking brake on.
It does not indicate the condition of the parking brake
system.

The parking brake switch is in parallel with the brake fluid
switch.


The brake system warning light also comes on when reservoir
brake fluid level falls below the specified limit with the parking
brake released and the engine run position.

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Cruise Control – HFV6 Page 8C–1
8C
Cruise Control – HFV6
ATTENTION
Before performing any Service Operation or other procedure described in this Section, refer to General Information Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.
1 General Information ...............................................................................................................................3
1.1 WARNINGS, CAUTIONS and NOTES................................................................................................... ................. 3
Definition of WARNING, CAUTION and NOTE Statements ............................................................................. .... 3
WARNING Defined............................................................................................................................................. 3
CAUTION Defined .............................................................................................................................................. 3
NOTE Defined .................................................................................................................................................... 4
1.2 System Components .............................................................................................................. ............................... 4
Cruise Control Switch Assembly ................................................................................................. ....................... 5
Instrument Cluster Assembly ............................................................................................................................. 5
Clutch Pedal Switch (Manual Only) .............................................................................................. ...................... 5
Stop Lamp Switch Assembly .............................................................................................................................. 5
Powertrain Interface Module .............................................................................................................................. 6
Engine Control Module ....................................................................................................................................... 6
Throttle Actuator Control (TAC) Assembly ....................................................................................... .................. 6
1.3 System Operation .................................................................................................................................................. 6
Preliminary Information......................................................................................................................................... 6
Enabled and Disabled ........................................................................................................... ............................. 6
Activated and Deactivated...................................................................................................... ............................ 7
Enabling the Cruise Control.................................................................................................... .............................. 7
Brake Before Cruise .............................................................................................................................................. 7
Activating the Cruise Control .................................................................................................. ............................. 7
Deactivating the Cruise Control ................................................................................................ ........................... 7
Pressing the Brake Pedal ................................................................................................................................... 7
Pressing the Cruise ON–OFF Button .............................................................................................. ................... 8
Rotating the Cruise Control Switch Assembly .................................................................................... ................ 8
Pressing the Clutch Pedal (Manual Vehicles Only) ............................................................................... ............. 8
Decelerating While Cruise Control is Activated ................................................................................. ................. 8
Resuming a Speed After Cruise Control Has Been Deactivated ..................................................................... .. 8
Accelerating While Cruise Control is Activated .................................................................................................. 8
Using the Cruise Control Switch Assembly ........................................................................................................ 8
Pressing the Accelerator Pedal .......................................................................................................................... 8
2 Diagnostics .............................................................................................................................................9
2.1 Diagnostic General Information............................................................................................................................ 9
Basic Knowledge Required ................................................................................................................................... 9
Basic Diagnostic Tools Required ......................................................................................................................... 9
Tech 2 Data List ................................................................................................................................................... 10
2.2 Diagnostic Systems Check ....................................................................................................... .......................... 10
Diagnostic Systems Check ................................................................................................................................. 10
2.3 Wiring Diagrams .................................................................................................................................................. 12
2.4 Cruise Control Inoperative / Malfunctioning.................................................................................... .................. 14
Circuit Description ............................................................................................................................................ 14
Manual Vehicles Only........................................................................................................... ............................ 14
Test Description ............................................................................................................................................... 14
Diagnostic Table Notes ......................................................................................................... ........................... 14
Diagnostic Table............................................................................................................................................... 14
SECTION
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ISUZU KB P190 2007

Cruise Control – HFV6 Page 8C–5
Legend
1 Engine Control Module
2 Throttle Actuator Control (TAC) Assembly
3 Cruise Control Switch Assembly
4 Instrument Cluster Assembly 5 Cruise Control ON / OFF Switch
6 Powertrain Interface Module
7 Clutch Pedal Switch Assembly (Manual Only)
8 Stop Lamp Switch Assembly
Cruise Control Switch Assembly
The cruise control switch assembly is located on the end of
the wiper and washer switch assembly.
• For harness routing from the cruise control switch
assembly to the powertrain interface module, refer to
8A Electrical – Body and Chassis.
• For wiring and to see how the switch integrates into
the system, refer to 2.3 W iring Diagrams.
Figure 8C – 2
Instrument Cluster Assembly
The instrument cluster assembly displays the status of the cruise control system as well as other information via the
warning indicators.

Figure 8C – 3
Clutch Pedal Switch (Manual Only)
This switch assembly is attached to the clutch pedal support bracket. The switch is normally closed when the clutch
pedal is at rest, opening when the pedal is pressed. Activation of this switch removes the signal to the ECM, which will
then deactivate the cruise control.
Stop Lamp Switch Assembly
The stop lamp switch assembly is located on the brake pedal support bracket. This switch has two sets of contacts with
two independent functions. The function of the switch assembly in the cruise control system is to deactivate the cruise
control when the brake pedal is pressed as well as an initial safety check of the switch operation prior to activating cruise
control.

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Cruise Control – HFV6 Page 8C–10
Tech 2 Data List
The Tech 2 displays the status of certain cruise control system input parameters.
To view the data list:
1 Connect Tech 2 to the data link connector (DLC) and turn on the ignition.
2 On Tech 2 select Body / Powertrain Interface Module / Diagnostic Data Display / Data List .
Tech 2 Parameter Units Displayed Typical Display Values
Cruise Cancel Switch Inactive / Active Inactive
Cruise Resume Switch Off / Enabled Off
Cruise Set Switch Inactive / Active Inactive
Cruise Main Switch Inactive / Active Inactive
Cruise Control Set Lamp Off / On Off
Cruise Control On Lamp Off / On Off
3 On Tech 2 select Engine / V6 Engine / Data Display / Data List / Cruise Control Data.
Tech 2 Parameter Units Displayed Typical Display Values
Brake Lamp Switch Inactive / Active Inactive
Initial Brake Apply Sig Inactive / Active Inactive
Cruise Set / Decel Swit Inactive / Active Inactive
Cruise Resume / Accelerat Inactive / Active Inactive
Cruise Control Disengag Engine Speed / Brake Engine Speed
4 On Tech 2 select Engine / V6 Engine / Data Display / Data List / Engine Data 1.
Tech 2 Parameter Units Displayed Typical Display Values
Clutch Pedal Switch Inactive / Active Inactive

2.2 Diagnostic Systems Check
Diagnostic Systems Check
Refer to 2.3 Wiring Diagram to aid in the diagnosis of the cruise control system.
For the cruise control system to work effectively the following systems / components need to be serviceable:
Step Action Yes No
1 Is the fault specifically isolated to this system / module?
Go to Step 2 Go to 6E1
Powertrain Interface Module – V6
2 1 Connect Tech 2 to the DLC.
2 Ignition ON, engine OFF.
3 On Tech 2 select Body / Powertrain Interface Module / Diagnostic Trouble
codes / Read DTCs’.
Are there any set DTC’s? Go to the
appropriate DTC table in 6E1
Powertrain Interface Module – V6. Go to Step 3

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Cruise Control – HFV6 Page 8C–11
Step Action Yes No
3 On Tech 2 select
Engine / V6 Engine / Diagnostic Trouble codes / Read DTCs’.
Are there any set DTC’s? Go to the
appropriate DTC table in 6C1-2 Engine
Management – V6 – Diagnostics Go to Step 4
4 Is the instrument cluster assembly functioning correctly? Go to 2.4
Cruise
Control Inoperative / Malfunctioning Refer to 8A
Electrical – Body
and Chassis.
When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.



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Cruise Control – HFV6 Page 8C–19
Step Action Yes No
28 1 Disconnect the ECM connector C – 56.
2 Using a multimeter set to measure voltage, back probe between the harness connector C – 56 pin 53 and ground.
3 W ith the aid of an assistant, monitor the voltage on the multimeter and press and release the clutch pedal.
• With the clutch pedal in the rest position, the multimeter
should display battery voltage
• W ith the clutch pedal pressed, the multimeter should
display 0 V
Does the multimeter display as described? Go to Step 31 Check for a blown
fuse C-4.
Check for short to ground or open circuit
Repair as required (refer to Note 2).
Go to Step 32
29 Check all associated circuits and connectors for the following:
• Loose or damaged connections
• Intermittent faults.
Refer to the Wiring Diagrams in this Section and repair as required.
W as the repair completed? Go to Step 32 —
30 Replace the PIM, refer to 6E1 Powertrain Interface Module – V6.
W as the repair completed? Go to Step 32 —
31 Replace the ECM module, refer to 6C1-3 Engine Management – V6
Service Operations.
W as the repair completed? Go to Step 32 —
32 Operate the system in order to verify the repair.
Did you correct the condition? System OK Go to Step 1
When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

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9A-16 SUPPLEMENTAL RESTRAINT SYSTEM




RTW 79ASH000201

Seat Belt with Pretensioner (If so
equipped)
The seat belt comprises a seat belt and a cylinder (a
cylinder filled with powder and an ignition device). In
cases of frontal collision which cause a shock
exceeding a specified level, the controller lets current
flow to the inflation circuit. The current ignites the
cylinder of the seat belt, producing gas. The gas helps
tighten the seat belt to restrain firmly the driver’s uppe
r
half in his seat.




RTW 49JSH000201

Steering Column
The steering column absorbs energy and is designed
to compress in a frontal crash to decrease the chance
of injury to the driver.
060R300038

Knee Bolster
The knee bolsters are used to absorb energy to
protect knees and control the forward movement o
f
the vehicle's front seat occupants during a frontal
crash, by limiting leg movement.

Definitions
Air Bag
An inflatable cloth cushion designed to deploy in
certain frontal crashes. It supplements the protection
offered by the seat belts by distributing the impact load
more evenly over the vehicle occupant's head and
torso.
Asynchronous
Performed in a non-periodic fashion, (i.e., no defined
time or interval).
B+
Battery voltage, (B+) The voltage available at the
battery at the time of the indicated measurement.
W ith the key “ON” and the engine not running, the
system voltage will likely be between 12 and 12.5
volts. At idle, the voltage may be 14 to 16 volts. The
voltage could be as low as 10 volts during engine
cranking.
Bulb Check
The SRS control unit will cause the “SRS” warning
lamp to flash seven times and then go “OFF”
whenever the ignition switch transitions to the ON
position from any other ignition switch position and no
malfunctions are detected.

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9A1-72 RESTRAINT CONTROL SYSTEM

DTC B0062 (Flash Code 62) Battery Voltage Too High

Step Action Yes No
1 W as the “SRS Diagnostic System Check” performed? Go to Step 2 Go to the “SRS
Diagnostic System Check”
2 1. Ignition switch is at “LOCK”.
2. Disconnect the SRS control unit.
3. Ignition switch “ON”.
4. Measure voltage on SRS control unit harness connector from terminal “1” to terminal “3” (ground).
Is voltage on terminal “1” below 16.5V? Ignition switch is at
“LOCK”.
Replace the SRS control unit.
Go to Step 3 Inspect the
Charging System. Refer to the
"Engine Electrical" section.
Go to Step 3
3 1. Reconnect all the components and ensure all components
are properly mounted.
2. Clear diagnostic trouble codes.
Is this step finished? Go to the “SRS
Diagnostic system Check” ―



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ISUZU KB P190 2007