2007 ISUZU KB P190 Circuit

ENGINE ELECTRICAL (4JK1/4JJ1) 6D-21
5. Use a circuit tester to check the armature for
grounding.
1) Hold one probe of the circuit tester against the commutator segment.
2) Hold the other circuit tester probe against the armature core.
If the circuit tester indicates continuity, the armature is grounded.
The armature must be replaced.





RTW 46DSH003601
6. Use the circuit tester to check the armature for
continuity.
1) Hold the circuit tester probes against two commutator segments.
2) Repair Step 1 at different segments of the armature core.
There should be continuity between all segments of the commutator.
If there is not, the armature must be replaced.




RTW 46DSH003701

Yoke
1. Use a circuit tester to check the field winding
ground.
1) Hold one circuit tester probe against the field winding end or brush.
2) Hold the other circuit tester probe against the bare surface of the yoke body.
There should be no continuity. If there is continuity, the field coil is grounded. The yoke
must be replaced.


RTW 46DSH003801
2. Use the circuit tester to check the field winding
continuity.
1) Hold one circuit tester probe against the “M” terminal lead wire.
2) Hold the other circuit tester probe against the field winding brush.
There should be continuity.If there is no continuity, the yoke must be replaced.

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ISUZU KB P190 2007

6D-22 ENGINE ELECTRICAL (4JK1/4JJ1)



RTW 46DSH003901
Brush and Brush Holder
1. Use a vernier caliper to measure the brush length
(four brushes).
Replace the brushes as a set if one or more of the brush lengths is less than the specified limit.
Brush Length mm (in)
Standard Limit
15 (0.59) 12 (0.47)



RTW 46DSH004001
2. Use a circuit tester to check the brush holder
insulation.
Touch one probe to the holder plate and the othe
r
probe to the positive brush holder.
There should be no continuity.




RTW 46DSH004101
3. Inspect the brushes for excessive wear.
If the negative brushes have excessive wear, the entire brush holder assembly must be replaced.
If the positive brushes have excessive wear, the entire yoke must be replaced.
Overrunning Clutch
1. Inspect the overrunning clutch gear teeth for
excessive wear and damage.
Replace the overrunning clutch if necessary.
2. Rotate the pinion clockwise.
It should turn smoothly.
3. Try to rotate the pinion in the opposite direction.
The pinion should lock.







065RY00035


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ISUZU KB P190 2007

ENGINE ELECTRICAL (4JK1/4JJ1) 6D-29
Pre-Heating System
Inspection and Repair
Make the necessary adjustments, repairs, and part
replacement if excessive wear of damage is discovered
during inspection.
Visual Check
Check the main fuses and glow indicator for damage.
Replace the part(s) if required.
Glow Relay
The glow relay is located in the relay box the engine
compartment.
Use an ohmmeter to measure the resistance between
terminals No.2 and No.3.
If the measured value is outside the specified range, the
glow relay must be replaced.
Glow Relay Resistance Ohms
94 - 114

















825R300046

Glow Plug
Use a circuit tester to test the glow plugs for continuity.
Glow Plug Resistance (Reference) Ohms
Approximately 0.9



LNW 21KSH001401



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ISUZU KB P190 2007

6E-4 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
Diagnostic Trouble Code (DTC) Type
Definitions
Emission Related DTC
Action Taken When the DTC Sets - Type A • The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Freeze Frame/ Failure Records.
Action Taken When the DTC Sets - Type B • The ECM illuminates the MIL on the second consecutive driving cycle when the diagnostic runs
and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The first time the
diagnostic fails, the ECM stores this information in
the Failure Records. If the diagnostic reports a
failure on the second consecutive driving cycle, the
ECM records the operating conditions at the time
of failure and stores this information in the Freeze
Frame and updates the Failure Records.
Conditions for Clearing the MIL/ DTC - Type A or
Ty p e B
• The ECM turns OFF the MIL after 3 consecutive driving cycles when the diagnostic runs and does
not fail. (Euro 4 Specification)
• The ECM turns OFF the MIL after 1 driving cycle when the diagnostic runs and does not fail. (Except
Euro 4 Specification)
• A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported. • Use a scan tool to clear the MIL and the DTC.
Non-Emissions Related DTCs
Action Taken When the DTC Sets - Type C
• The ECM illuminates the Service Vehicle Soon (SVS) lamp when the diagnostic runs and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Failure Records.
Conditions for Clearing the SVS Lamp/ DTC - Type
C
• The ECM turns OFF the SVS lamp after 1 driving cycle when the diagnostic runs and does not fail.
• A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported.
• Use a scan tool to clear the SVS lamp and the DTC.
Action Taken When the DTC Sets - Type D • The ECM will not illuminate the MIL or SVS lamp.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Failure Records.
Conditions for Clearing the DTC - Type D • A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported.
• Use a scan tool to clear the DTC.
Diagnostic Trouble Code (DTC) List
DTC Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification
(Standard Output)
P0016 16 C AA Crankshaft Position - Camshaft Position Correlation
P0045 33 A A- Turbocharger Boost Control Solenoid Circuit
P0087 225 A AA Fuel Rail/ System Pressure Too-Low
P0088 118 A AA Fuel Rail/ System Pressure Too-High (First Stage)
P0088 118 C AA Fuel Rail/ System Pressure Too-High (Second Stage)
P0089 151 A AA Fuel Pressure Regulator Performance
P0091 247 A AA Fuel Pressure Regulator Control Circuit Low
P0092 247 A AA Fuel Pressure Regulator Control Circuit High

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ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-5
P0093 227 AAA Fuel System Leak Detected
P0101 92 A -- Mass Air Flow Sensor Circuit Range/ Performance
P0102 91 A AA Mass Air Flow Sensor Circuit Low Input
P0103 91 A AA Mass Air Flow Sensor Circuit High Input
P0107 32 A A- Manifold Absolute Pressure Sensor Circuit Low Input
P0108 32 A A- Manifold Absolute Pressure Sensor Circuit High Input
P0112 22 A AA Intake Air Temperature Sensor Circuit Low
P0113 22 A AA Intake Air Temperature Sensor Circuit High
P0116 23 A --Engine Coolant Temperature Sensor Circuit Range/
Performance
P0117 23 A AA Engine Coolant Temperature Sensor Circuit Low
P0118 23 A AA Engine Coolant Temperature Sensor Circuit High
P0122 43 B AA Throttle Position Sensor Circuit Low
P0123 43 B AA Throttle Position Sensor Circuit High
P0182 211 A AA Fuel Temperature Sensor Circuit Low
P0183 211 A AA Fuel Temperature Sensor Circuit High
P0192 245 A AA Fuel Rail Pressure Sensor Circuit Low
P0193 245 A AA Fuel Rail Pressure Sensor Circuit High
P0201 271 A AA Injector Circuit Open - Cylinder 1
P0202 272 A AA Injector Circuit Open - Cylinder 2
P0203 273 A AA Injector Circuit Open - Cylinder 3
P0204 274 A AA Injector Circuit Open - Cylinder 4
P0217 542 D DD Engine Coolant Over Temperature Condition
P0219 543 C AA Engine Overspeed Condition
P0231 69 C AA Fuel Pump Secondary Circuit Low
P0232 69 C AA Fuel Pump Secondary Circuit High
P0234 42 A A- Turbocharger Overboost Condition
P0299 65 A A- Turbocharger Underboost
P0335 15 A AA Crankshaft Position Sensor Circuit
P0336 15 A AA Crankshaft Position Sensor Circuit Range/ Performance
P0340 14 C AA Camshaft Position Sensor Circuit
P0341 14 C AA Camshaft Position Sensor Circuit Range/ Performance
P0380 66 C AA Glow Plug Circuit
P0401 93 A -- EGR Flow Insufficient Detected
P0403 37 B AA EGR Control Circuit
P0404 45 A AA EGR Control Circuit Range/ Performance
P0405 44 B AA EGR Sensor Circuit Low
P0406 44 B AA EGR Sensor Circuit High
P0500 25 A AA Vehicle Speed Sensor
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)

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ISUZU KB P190 2007

6E-6 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
P0501 25 AAA Vehicle Speed Sensor Circuit Range/ Performance
P0512 417 C -- Starter Request Circuit
P0562 35 C AA System Voltage Low
P0563 35 C AA System Voltage High
P0565 515 D D- Cruise Control On Signal
P0566 516 D D- Cruise Control Off Signal
P0567 517 D D- Cruise Control Resume Signal
P0568 518 D D- Cruise Control Set Signal
P0571 26 D D- Brake Switch Circuit
P0601 53 C AA Internal Control Module Memory Check Sum Error
P0602 154 C AA Control Module Programming Error
P0604 153 C AA Internal Control Module RAM Error
P0606 51 C AA ECM Processor
P0615 19 C -- Starter Relay Circuit
P0633 176 C AA Immobilizer Not Programmed
P0638 61 A AA Throttle Actuator Control Range/ Performance
P0642 55 C AA Sensor Reference Voltage 1 Circuit Low
P0643 55 C AA Sensor Reference Voltage 1 Circuit High
P0650 77 A AA Malfunction Indicator Lamp (MIL) Control Circuit
P0652 56 A AA Sensor Reference Voltage 2 Circuit Low
P0653 56 A AA Sensor Reference Voltage 2 Circuit High
P0661 58 C AA Intake Manifold Turning Valve Control Circuit Low
P0662 58 C AA Intake Manifold Turning Valve Control Circuit High
P0698 57 A AA Sensor Reference Voltage 3 Circuit Low
P0699 57 A AA Sensor Reference Voltage 3 Circuit High
P0700 185 A A- Transmission Control System (MIL Request)
P1064 247 A AA Fuel Pressure Regulator Control Circuit
P1065 247 A AA Fuel Pressure Regulator Control Circuit
P1093 227 A AA Fuel Rail Pressure Too Low
P1094 226 A AAFuel Rail Pressure Too Low (FRP Regulator
Commanded High)
P1094 226 C AA Fuel Rail Pressure Too Low (Fuel Pressure Drop)
P1196 461 A AA Intake Throttle Solenoid Control Driver
P1197 461 A AA Intake Throttle Solenoid Control Driver
P1198 461 A AA Intake Throttle Solenoid Control Driver
P124B 157 C AA Injector Circuit Short Across Group 1 & 2
P1261 34 A AA Injector Positive Voltage Control Circuit Group 1
P1261 34 A AAInjector Positive Voltage Control Circuit (Supply Voltage
Low)
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-7
P1261 34 CAAInjector Positive Voltage Control Circuit (Supply Voltage
High)
P1262 34 A AA Injector Positive Voltage Control Circuit Group 2
P1404 45 A AA EGR Position Fault (Closed Position Error)
P1404 45 A -- EGR Position Fault (Learned Position Error)
P1411 445 A AA EGR Solenoid Control Driver
P1412 445 A AA EGR Solenoid Control Driver
P1413 445 A AA EGR Solenoid Control Driver
P156A 135 C AA Battery Voltage Low
P156B 135 C AA Battery Voltage High
P161B 179 C AA Immobilizer Wrong Response
P1621 54 C AAControl Module Long Term Memory Performance
(Learned Data)
P1621 254 C AAControl Module Long Term Memory Performance (VIN or
Immobilizer Data)
P1664 76 D -- Service Vehicle Soon Lamp Control Circuit (Low Voltage)
P1664 76 C --Service Vehicle Soon Lamp Control Circuit (High
Voltage)
P2100 446 B AA Intake Throttle Solenoid Circuit Open
P2101 446 B AA Intake Throttle Solenoid Circuit Low
P2103 446 B AA Intake Throttle Solenoid Circuit High
P2122 121 C AA Pedal Position Sensor 1 Circuit Low Input
P2123 121 C AA Pedal Position Sensor 1 Circuit High Input
P2127 122 C AA Pedal Position Sensor 2 Circuit Low Input
P2128 122 C AA Pedal Position Sensor 2 Circuit High Input
P2132 123 C AA Pedal Position Sensor 3 Circuit Low Input
P2133 123 A AA Pedal Position Sensor 3 Circuit High Input
P2138 124 C AA Pedal Position Sensor 1 - 2 Voltage Correlation
P2139 125 C AA Pedal Position Sensor 1 - 3 Voltage Correlation
P2140 126 C AA Pedal Position Sensor 2 - 3 Voltage Correlation
P2146 158 A AA Fuel Injector Group 1 Supply Voltage Circuit Short
P2147 158 A AA Fuel Injector Group 1 Supply Voltage Circuit Low
P2148 158 A AA Fuel Injector Group 1 Supply Voltage Circuit High
P2149 159 A AA Fuel Injector Group 2 Supply Voltage Circuit Short
P2150 159 A AA Fuel Injector Group 2 Supply Voltage Circuit Low
P2151 159 A AA Fuel Injector Group 2 Supply Voltage Circuit High
P2227 71 A A- Barometric Pressure Sensor Circuit Range/ Performance
P2228 71 A AA Barometric Pressure Sensor Circuit Low
P2229 71 A AA Barometric Pressure sensor Circuit High
P2621 94 - -A Throttle Position Output Circuit Low
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)

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6E-8 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
P2622 94 --A Throttle Position Output Circuit High
U0001 84 A AA High Speed CAN Communication Bus
U0101 85 A A- Lost Communication with TCM
U0167 177 C AALost Communication With Vehicle Immobilizer Control
Module
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)

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ISUZU KB P190 2007