Powertrain Diagnostic Procedures - Diesel
- DTC Index
- Introduction
- Identification Of System
- System Description And Functional Operation
- Disclaimers, Safety, Warnings
- Required Tools And Equipment
- Glossary Of Terms
- Diagnostic Information And Procedures
- Communication - Symptoms
- Symptom List: CAN C BUS PERFORMANCE (FCM) (DIESEL ONLY); *CHECKING THE CAN C BUS CIRCUITS (DIESEL ONLY)
- Symptom: GATEWAY INTERNAL (FCM) (DIESEL ONLY)
- Symptom: J1850 BUS PERFORMANCE (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH ABS (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH BCM (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH CLUSTER (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH ECM (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH SKREEM (FCM) (DIESEL ONLY)
- Symptom: LOST COMMUNICATION WITH TCM (FCM) (DIESEL ONLY)
- Symptom: *NO RESPONSE FROM ECM (DIESEL ONLY)
- Symptom: *NO RESPONSE FROM FRONT CONTROL MODULE (DIESEL ONLY)
- Symptom: *NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE
- Symptom: *NO RESPONSE FROM TRANSMISSION CONTROL MODULE (DIESEL ONLY)
- Symptom: *PCI BUS COMMUNICATION FAILURE
- DRIVEABILITY - Diesel - Symptoms
- Symptom: *CHECKING THE ACCELERATOR PEDAL POSITION SENSOR CALIBRATION
- Symptom: *CHECKING THE BOOST PRESSURE VACUUM SUPPLY
- Symptom: *CHECKING THE ECM POWER AND GROUND CIRCUITS
- Symptom: *CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR CALIBRATION
- Symptom: *CHECKING THE ENGINE MECHANICAL SYSTEMS
- Symptom: *CHECKING THE FUEL PRESSURE SENSOR CIRCUITS
- Symptom: *CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS
- Symptom: *CHECKING THE FUEL QUANTITY SOLENOID CIRCUITS
- Symptom: CHECKING THE HIGH-SIDE FUEL SYSTEM; *CHECKING THE HIGH-SIDE FUEL PRESSURE
- Symptom: *CHECKING THE SPEED CONTROL OPERATION
- Symptom: *CHECKING THE TRANSFER CASE POSITION SENSOR
- Symptom: *CHECKING THE VISCOUS/CABIN HEATER RELAY
- Symptom: *ENGINE CRANKS BUT WILL NOT START
- Symptom: *ENGINE WILL NOT CRANK
- Symptom: *LACK OF ENGINE POWER
- DRIVEABILITY - Diesel - Diagnostic Tests
- B10B3-Viscous/Cabin Heater Control Short Circuit
- B10B3-Viscous/Cabin Heater Relay Control Open Circuit
- P0045-Boost Pressure Solenoid Excessive Current; P0048-Boost Pressure Solenoid Short Circuit
- P0045-Boost Pressure Solenoid Open Circuit; P0047-Boost Pressure Solenoid Short To Ground
- P0070-Ambient Air Temperature Signal Voltage Too High
- P0070-Ambient Air Temperature Signal Voltage Too Low
- P0087-Fuel Rail Pressure Malfunction Pressure Too Low; P0088-Fuel Rail Pressure Malfunction Pressure Too High; P0089-Fuel Pressure Solenoid After-Run Plausibility; P1143-Fuel Rail Pressure Malfunction Positive Pressure Deviation; P1144-Fuel Rail Pressure Malfunction Positive Volume Deviation; P1145-Fuel Rail Pressure Malfunction Negative Pressure Deviation; P1148-Fuel Rail Pressure Malfunction Pressure Drop In Overrun; P1151-Fuel Rail Pressure Malfunction Maximum Positive Deviation; P1152-Fuel Rail Pressure Malfunction Positive DEV Fuel Press Sol Set-Point; P1153-Fuel Rail Pressure Malfunction Negative DEV Fuel Press Sol Set-Point; P1154-Fuel Rail Pressure Malfunction Rail Pressure Is Too Low; P1155-Fuel Rail Pressure Malfunction Rail Pressure Is Too High; P1156-Fuel Rail Pressure Malfunction Plausibility
- P0090-Fuel Quantity Solenoid Open Circuit; P0091-Fuel Quantity Solenoid Short To Ground; P0092-Fuel Quantity Solenoid Short Circuit; P0251-Fuel Quantity Solenoid Open Or Short Circuit; P0252-Fuel Quantity Solenoid Circuit Malfunction; P0253-Fuel Quantity Solenoid Short To Ground; P0254-Fuel Quantity Solenoid Short Circuit
- Notes
- When Monitored and Set Condition:
- P0090-Fuel Quantity Solenoid Open Circuit
- P0091-Fuel Quantity Solenoid Short To Ground
- P0092-Fuel Quantity Solenoid Short Circuit
- P0251-Fuel Quantity Solenoid Open Or Short Circuit
- P0252-Fuel Quantity Solenoid Circuit Malfunction
- P0253-Fuel Quantity Solenoid Short To Ground
- P0254-Fuel Quantity Solenoid Short Circuit
- Possible Causes
- Diagnostic Procedure
- P0100-MAF Sensor Signal Voltage Too High; P0100-MAF Sensor Signal Voltage Too Low
- P0101-MAF Sensor Signal Negative Deviation; P0101-MAF Sensor Signal Positive Deviation
- P0105-Inlet Pressure Sensor Signal Plausibility
- P0105-Inlet Pressure Sensor Signal Voltage Too High
- P0105-Inlet Pressure Sensor Signal Voltage Too Low
- P0110-Intake Air Temp Sensor Signal Voltage Too High
- P0110-Intake Air Temp Sensor Signal Voltage Too Low
- P0115-Engine Coolant Temp Sensor Signal Voltage Too High
- P0115-Engine Coolant Temp Sensor Signal Voltage Too Low
- P0128-Engine Coolant Temp Sensor Engine Is Cold Too Long
- P0180-Fuel Temperature Sensor Signal Voltage Too High
- P0180-Fuel Temperature Sensor Signal Voltage Too Low
- P0190-Fuel Press Sensor Signal Voltage Too High
- P0190-Fuel Press Sensor Signal Voltage Too Low
- P0191-Fuel Press Sensor After-Run Negative Plausibility; P0191-Fuel Press Sensor After-Run Positive Plausibility
- P0201-Cylinder 1-Injector Circuit Current Decrease; P0201-Cylinder 1-Injector Circuit Load Drop; P0201-Cylinder 1-Injector Circuit OVERCURRENT High Side; P0201-Cylinder 1-Injector Circuit OVERCURRENT Low Side; P0202-Cylinder 2-Injector Circuit Current Decrease; P0202-Cylinder 2-Injector Circuit Load Drop; P0202-Cylinder 2-Injector Circuit OVERCURRENT High Side; P0202-Cylinder 2-Injector Circuit OVERCURRENT Low Side; P0203-Cylinder 3-Injector Circuit Current Decrease; P0203-Cylinder 3-Injector Circuit Load Drop; P0203-Cylinder 3-Injector Circuit OVERCURRENT High Side; P0203-Cylinder 3-Injector Circuit OVERCURRENT Low Side; P0204-Cylinder 4-Injector Circuit Current Decrease; P0204-Cylinder 4-Injector Circuit Load Drop; P0204-Cylinder 4-Injector Circuit OVERCURRENT High Side; P0204-Cylinder 4-Injector Circuit OVERCURRENT Low Side; P2147-Injector Bank 1 Open Circuit; P2148-Injector Bank 1 Short Circuit; P2150-Injector Bank 2 Open Circuit; P2151-Injector Bank 2 Short Circuit
- Notes
- When Monitored and Set Condition:
- P0201-Cylinder 1-Injector Circuit Current Decrease
- P0201-Cylinder 1-Injector Circuit Load Drop
- P0201-Cylinder 1-Injector Circuit OVERCURRENT High Side
- P0201-Cylinder 1-Injector Circuit OVERCURRENT Low Side
- P0202-Cylinder 2-Injector Circuit Current Decrease
- P0202-Cylinder 2-Injector Circuit Load Drop
- P0202-Cylinder 2-Injector Circuit OVERCURRENT High Side
- P0202-Cylinder 2-Injector Circuit OVERCURRENT Low Side
- P0203-Cylinder 3-Injector Circuit Current Decrease
- P0203-Cylinder 3-Injector Circuit Load Drop
- P0203-Cylinder 3-Injector Circuit OVERCURRENT High Side
- P0203-Cylinder 3-Injector Circuit OVERCURRENT Low Side
- P0204-Cylinder 4-Injector Circuit Current Decrease
- P0204-Cylinder 4-Injector Circuit Load Drop
- P0204-Cylinder 4-Injector Circuit OVERCURRENT High Side
- P0204-Cylinder 4-Injector Circuit OVERCURRENT Low Side
- Possible Causes
- Diagnostic Procedure
- P0234-Boost Pressure Sensor Negative Deviation; P0299-Boost Pressure Sensor Positive Deviation
- P0235-Boost Pressure Sensor Plausibility
- P0235-Boost Pressure Sensor Signal Voltage Too High
- P0235-Boost Pressure Sensor Signal Voltage Too Low
- P0300-Misfire Detected; P0300-Misfire Detected; P0300-Misfire Detected; P0300-Misfire Detected
- P0301-Misfire Detected Cylinder #1; P0302-Misfire Detected Cylinder #2; P0303-Misfire Detected Cylinder #3; P0304-Misfire Detected Cylinder #4
- P0335-Crankshaft Position Sensor Circuit Incorrect Or Missing Signal; P0339-CRANKSHFT Position Sensor Circuit Intermittent Incorrect Or Missing Signal
- P0340-Camshaft Position Sensor Circuit Missing Signal; P0340-Camshaft Position Sensor Circuit Signal Plausibility; P0344-Camshaft Position Sensor Circuit Intermittent Missing Signal; P0344-Camshaft Position Sensor Circuit Intermittent Signal Plausibility
- P0402-EGR Solenoid Circuit Negative Deviation; P0402-EGR Solenoid Circuit Positive Deviation
- P0403-EGR Solenoid Circuit Excessive Current; P0490-EGR Solenoid Circuit Short Circuit
- P0403-EGR Solenoid Circuit Open Circuit; P0489-EGR Solenoid Circuit Short To Ground
- P0460-Fuel Level Sensor Circuit Signal Voltage Too High
- P0460-Fuel Level Sensor Circuit Signal Voltage Too Low
- P0480-Fan 1 Control Circuit Excessive Current; P0480-Fan 1 Control Circuit Short Circuit
- P0480-Fan 1 Control Circuit Open Circuit; P0480-Fan 1 Control Circuit Short To Ground
- P0481-Fan 2 Control Circuit Excessive Current; P0481-Fan 2 Control Circuit Short Circuit
- P0481-Fan 2 Control Circuit Open Circuit; P0481-Fan 2 Control Circuit Short To Ground
- P0501-Vehicle Speed Sensor Plausibility
- P0504-Brake Switch Signal Circuits Plausibility With Redundant Contact
- P0513-Skim System Invalid Key Code Received; P0513-Skim System Read Access To EEPROM Failure; P0513-Skim System Skis Error; P0513-Skim System Write Access To EEPROM Failure
- P0520-Oil Press Sensor Circuit MALF Plausibility
- P0520-Oil Press Sensor CKT MALF Signal Voltage Too High
- P0520-Oil Press Sensor CKT MALF Signal Voltage Too Low
- P0530-A/C Pressure Sensor Circuit Plausibility; P0530-A/C Pressure Sensor Circuit Signal Voltage Too High; P0530-A/C Pressure Sensor Circuit Signal Voltage Too Low
- P0560-ECM Voltage Too High; P0560-ECM Voltage Too Low
- P0564-S/C Switch #1 Signal Circuit Plausibility; P0564-S/C Switch #1 Signal Circuit Signal Voltage Too High; P0564-S/C Switch #1 Signal Circuit Signal Voltage Too Low; P0564-S/C Switch #1 Signal Circuit Stuck Switch
- P0585-S/C Switch Plausibility Between Switch #1 And #2
- P0589-S/C Switch #2 Signal Circuit Plausibility; P0589-S/C Switch #2 Signal Circuit Signal Voltage Too High; P0589-S/C Switch #2 Signal Circuit Signal Voltage Too Low; P0589-S/C Switch #2 Signal Circuit Stuck Switch
- P0600-ECM Communication Error; P0602-ECM Invalid Code Word; P0606-ECM Checksum Error; P0606-ECM Deviation Error; P0607-ECM Internal Error; P0611-Capacitor Voltage 1; P0611-Capacitor Voltage 1; P0611-Capacitor Voltage 1; P0611-Capacitor Voltage 1; P0686-ECM Voltage Error Low; P0687-ECM Voltage Error High; P1136-ECM Recovery; P1168-ECM Communication Error; P1169-ECM A/D Converter Error; P1169-ECM A/D Converter Error; P1169-ECM A/D Converter Error; P1169-ECM A/D Converter Error; P2226-Barometric Pressure Circuit Signal Voltage Too High; P2226-Barometric Pressure Circuit Signal Voltage Too Low; P2226-Barometric Pressure Sensor Error; P2226-Barometric Pressure Sensor Error
- Notes
- When Monitored and Set Condition:
- P0600-ECM Communication Error
- P0602-ECM Invalid Code Word
- P0606-ECM Checksum Error
- P0606-ECM Deviation Error
- P0607-ECM Internal Error
- P0611-Capacitor Voltage 1
- P1168-ECM Communication Error
- P1169-ECM A/D Converter Error
- P2226-Barometric Pressure Circuit Signal Voltage Too High
- P2226-Barometric Pressure Circuit Signal Voltage Too Low
- P2226-Barometric Pressure Sensor Error
- Possible Causes
- Diagnostic Procedure
- P0610-Automatic Transmission Coded As Manual Transmission; P0610-Manual Transmission Coded As Automatic Transmission
- P0615-Starter Relay Circuit Excessive Current; P0615-Starter Relay Circuit Open Circuit; P0616-Starter Relay Circuit Short To Ground; P0617-Starter Relay Circuit Short Circuit
- P0641-Sensor Supply 1 Voltage Too High
- P0641-Sensor Supply 1 Voltage Too Low
- P0645-A/C Clutch Relay Circuit Excessive Current; P0645-A/C Clutch Relay Circuit Short Circuit
- P0645-A/C Clutch Relay Circuit Open Circuit; P0645-A/C Clutch Relay Circuit Short To Ground
- P0651-Sensor Supply 2 Voltage Too High
- P0651-Sensor Supply 2 Voltage Too Low
- P0670-Glow Plug Controller Circuit Malfunction; P0683-Glow Plug Module Signal Circuit Malfunction
- P0671-Glow Plug 1 Plug Failure; P0671-Glow Plug 1 Short Circuit; P0672-Glow Plug 2 Plug Failure; P0672-Glow Plug 2 Short Circuit; P0673-Glow Plug 3 Plug Failure; P0673-Glow Plug 3 Short Circuit; P0674-Glow Plug 4 Plug Failure; P0674-Glow Plug 4 Short Circuit
- P0685-ASD Relay Control Circuit Shuts Off Too Early
- P0685-ASD Relay Control Circuit Shuts Off Too Late
- P0697-Sensor Supply 3 Voltage Too Low
- P0697-Sensor Supply 3 Voltage Too High
- P0700-TCM DTC
- P0836-Transfer Case Position Sensor Plausibility; P0836-Transfer Case Position Sensor Plausibility 2; P0836-Transfer Case Position Sensor Signal Voltage Too High; P0836-Transfer Case Position Sensor Signal Voltage Too Low
- P0864-TCM Torque Reduction Signal Error; P0864-TCM Torque Reduction Signal Error; P0864-TCM Torque Reduction Signal Error; P0864-TCM Torque Reduction Signal Error
- P1101-ACM Crash Signal Received
- P1102-Viscous/Cabin Heater Relay Excessive Current; P1102-Viscous/Cabin Heater Relay Open Circuit; P1102-Viscous/Cabin Heater Relay Short Circuit; P1102-Viscous/Cabin Heater Relay Short To Ground
- P1131-Glow Plug Module Voltage Supply; P1132-Glow Plug Module Internal Fault
- P1135-Glow Plug Module Control Circuit Excessive Current; P1135-Glow Plug Module Control Circuit Open Circuit; P1135-Glow Plug Module Control Circuit Shorted To Ground; P1135-Glow Plug Module Control Circuit Shorted To Voltage
- P1140-Vacuum Reservoir Solenoid/EGR Air Flow Control Valve Open Circuit; P1140-Vacuum Reservoir Solenoid/EGR Air Flow Control Valve Short To Ground; P2525-Vacuum Reservoir Solenoid Open Circuit; P2527-Vacuum Reservoir Solenoid Short To Ground
- P1140-Vacuum Reservoir Solenoid/EGR Air Flow Control Valve Short Circuit; P2525-Vacuum Reservoir Solenoid Excessive Current; P2528-Vacuum Reservoir Solenoid Short Circuit
- P1142-Fuel Pressure Solenoid Open Circuit; P1142-Fuel Pressure Solenoid Plausibility; P1142-Fuel Pressure Solenoid Short Circuit; P2294-Fuel Pressure Solenoid Open Circuit; P2295-Fuel Pressure Solenoid Short To Ground; P2296-Fuel Pressure Solenoid Short Circuit
- P1159-Improper Start Attempt
- P1160-IGN Voltage; P1160-Ignition Voltage
- P1167-Capacitor Voltage 1; P1167-Capacitor Voltage 1; P1167-Capacitor Voltage 1; P1167-Capacitor Voltage 1
- P1202-Fuel System Over Pressure - Regulator Stuck
- P1250-Vacuum Reservoir Solenoid Open Circuit; P1251-Vacuum Reservoir Solenoid Short To Ground; P1252-Vacuum Reservoir Solenoid Short Circuit
- P2101-EGR Air Flow Control Valve Excessive Current; P2142-EGR Air Flow Control Valve Short Circuit
- P2101-EGR Air Flow Control Valve Open CKT; P2141-EGR Air Flow Control Valve Short To Ground
- P2120-Acc Pedal Position Sensor 1 CKT Plausibility; P2120-Acc Pedal Position Sensor 1 CKT Signal Voltage Too High; P2120-Acc Pedal Position Sensor 1 CKT Signal Voltage Too Low; P2125-Acc Pedal Position Sensor 2 Circuit Plausibility; P2125-Acc Pedal Position Sensor 2 CKT Signal Voltage Too High; P2125-Acc Pedal Position Sensor 2 CKT Signal Voltage Too Low
- Notes
- When Monitored and Set Condition:
- P2120-Acc Pedal Position Sensor 1 CKT Plausibility
- P2120-Acc Pedal Position Sensor 1 CKT Signal Voltage Too High
- P2120-Acc Pedal Position Sensor 1 CKT Signal Voltage Too Low
- P2125-Acc Pedal Position Sensor 2 Circuit Plausibility
- P2125-Acc Pedal Position Sensor 2 CKT Signal Voltage Too High
- P2125-Acc Pedal Position Sensor 2 CKT Signal Voltage Too Low
- Possible Causes
- Diagnostic Procedure
- P2264-Water In Fuel Voltage Above Upper Limit
- P2264-Water In Fuel Voltage Below Lower Limit
- Sentry Key Immobilizer - BUX DSL - Symptoms
- Symptom List: ANTENNA FAILURE; COP FAILURE; EEPROM FAILURE; INTERNAL FAULT; RAM FAILURE; SERIAL LINK INTERNAL FAULT; STACK OVERFLOW FAILURE
- Symptom List: PCM STATUS FAILURE; SERIAL LINK EXTERNAL FAULT
- Symptom List: ROLLING CODE FAILURE; VIN MISMATCH
- Symptom List: TRANSPONDER COMMUNICATION FAILURE; TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE; TRANSPONDER ID MISMATCH; TRANSPONDER RESPONSE MISMATCH
- Verification Tests
- Communication - Symptoms
- Component Locations
- Connector PINOUTS
- A/C Compressor Clutch - Black 2 Way
- A/C High Pressure Switch (Diesel) - Gray 2 Way
- A/C Low Pressure Switch - Gray 2 Way
- Accelerator Pedal Position Sensor (Diesel) - Black 6 Way
- Ambient Temperature Sensor - 2 Way
- Anti-Lock Brake Module - 47 Way
- Boost Pressure Solenoid (Diesel) - 2 Way
- Brake Lamp Switch - Black 6 Way
- Cabin Heater (Diesel) - 2 Way
- Camshaft Position Sensor (Diesel) - 3 Way
- Clutch Interlock/UPSTOP Switch (M/T) - 4 Way
- Crankshaft Position Sensor (Diesel) - Black 3 Way
- Data Link Connector - Black 16 Way
- EGR Air Flow Control Valve (Diesel) - 4 Way
- EGR Solenoid (Diesel) - 6 Way
- Engine Control Module C1 (Diesel) - 96 Way
- Engine Control Module C2 (Diesel) - 58 Way
- Engine Coolant Temperature Sensor (Diesel) - 2 Way
- Front Control Module (Diesel) - 24 Way
- Fuel Injector No. 1 (Diesel) - Black 2 Way
- Fuel Injector No. 2 (Diesel) - Black 2 Way
- Fuel Injector No. 3 (Diesel) - Black 2 Way
- Fuel Injector No. 4 (Diesel) - Black 2 Way
- Fuel Pressure Sensor (Diesel) - Black 3 Way
- Fuel Pressure Solenoid (Diesel) - 2 Way
- Fuel Quantity Solenoid (Diesel) - Black 2 Way
- Fuel Temperature Sensor (Diesel) - 2 Way
- Generator - 2 Way
- Glow Plug Module (Diesel) - 11 Way
- Intake Air Temperature/Boost Pressure Sensor (Diesel) - 4 Way
- Left Speed Control Switch (Except Base) - Black 4 Way
- Mass Air Flow Sensor (Diesel) - 6 Way
- Power Distribution Center
- Radiator Fan Motor - 3 Way
- Right Speed Control Switch (Except Base) - Black 4 Way
- Sentry Key Immobilizer Module (Except Base) - Black 6 Way
- Transmission Control Module (2.8L) - Black 60 Way
- Vacuum Reservoir Solenoid (Diesel) - 2 Way
- Water In Fuel Sensor (Diesel) - Gray 2 Way
- Schematic Diagrams
- Charts And Graphs