Powertrain Diagnostic Procedures

• Introduction
  • Notes
  • System Coverage
  • Six-Step Troubleshooting Procedure
• Identification Of System
• System Description And Functional Operation
  • General Description
  • Function Operation
    • Fuel Control (Gas)
    • On-Board Diagnostics
      • Notes
      • MIL Lamp Strategy
      • OBDII/EUROIII Monitor Run Process, JTEC
        • Notes
        • Monitor Preliminary Checks:
    • Transmission Control
      • Notes
      • Transmission Identification
      • Governor Pressure Solenoid Valve
      • Governor Pressure Sensor
      • Governor Shift Schedules
      • Governor Operation
      • Transmission Temperature Sensor
      • Transmission OUPUT Shaft Speed Sensor
      • Torque Converter Electronics
    • Other Controls
      • Charging System
      • Seed Control
      • Fuel Vapor Recovery System (Duty Cycle Purge Control) Gas Engine
      • Leak Detection Pump
        • Leak Detection Pump Operation
        • EVAP Leak Detection System Components
        • Leak Detection Pump (LDP) Components
        • LDP At Rest (Not Powered)
        • Diaphragm Upward Movement
        • Diaphragm Downward Movement
        • Pumping Action
        • Enabling Conditions To Run EVAP Leak Detection Test
        • Figure 6 Section 1
        • Figure 6 Section 2
        • Figure 6 Section 3
        • Figure 6 Section 4
        • Figure 6 Section 5
        • Diagnostic Tips
        • Test Equipment
        • Important
    • Non-Monitored Circuits
    • Skis Overview
    • Skim On-Board Diagnostic
    • Skis Operation
    • Programming The Powertrain Control Module
    • Programming The Sentry Key Immobilizer Module
    • Programming The Ignition Keys To The Sentry Key Immobilizer Module
  • Diagnostic Trouble Codes
    • Notes
    • Hard Code
    • Intermittent Code
    • Starts Since Set Counter
      • Notes
      • DISTANCE SINCE MI SET (Euro III)
      • No Start Information
        • Notes
        • For Abs And Air Bag Systems:
        • For Skim Theft Alarm:
  • Using The DRBIII®
  • DRBIII® Error Messages And Blank Screen
    • Notes
    • DRBIII® Does Not Power Up
    • Display Is Not Visible
• Disclaimers, Safety, Warnings
  • Disclaimers
  • Safety
    • Technician Safety Information
    • Vehicle Preparation For Testing
    • Servicing Sub-Assemblies
    • DRBIII® Safety Information
  • Warnings
    • Vehicle Damage Warnings
    • Road Testing A Complaint Vehicle
• Required Tools And Equipment
• Glossary Of Acronyms
• Diagnostic Procedure Code Definitions
• Communication - Symptoms
  • Symptom: *NO RESPONSE FROM PCM (PCI BUS) - GAS ONLY
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *NO RESPONSE FROM PCM (SCI ONLY) - GAS ONLY
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *PCI BUS COMMUNICATION FAILURE
    • Possible Causes
    • Diagnostic Procedure
• DRIVEABILITY - Gas - Symptoms
  • Symptom: INTERMITTENT CONDITION
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *A/C OPERATES WITH A/C SELECT SWITCH OFF
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON DRBIII®
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *CHECKING A/C SYSTEM OPERATION WITH NO DTCS
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *CHECKING CHARGING SYSTEM OPERATION WITH NO DTCS
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *CHECKING HARD TO FILL WITH FUEL
    • Possible Causes
    • Repair Instructions
  • Symptom: *CHECKING THE PCM POWER AND GROUNDS
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *HYDRAULIC FAN OPERATION
    • Possible Causes
    • Diagnostic Procedure
• DRIVEABILITY - Gas - Diagnostic Tests
  • P0031-O2 Sensor 1/1 Heater Circuit Low; P0032-O2 Sensor 1/1 Heater Circuit High; P0037-O2 Sensor 1/2 Heater Circuit Low; P0038-O2 Sensor 1/2 Heater Circuit High; P0051-O2 Sensor 2/1 Heater Circuit Low; P0052-O2 Sensor 2/1 Heater Circuit High
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0071-Ambient/Battery Temp Sensor Performance
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0107-Map Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0108-Map Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0111-Intake Air Temp Sensor Performance
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0112-Intake Air Temp Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0113-Intake Air Temp Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0117-Engine Coolant Temp Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0118-Engine Coolant Temp Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0121-TP Sensor Voltage Does Not Agree With Map
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0122-Throttle Position Sensor #1 Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P0123-Throttle Position Sensor #1 Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P0125-Closed Loop Temp Not Reached
    • When Monitored and Set Condition:
    • Possible Causes
  • P0131-02 Sensor 1/1 Voltage Too Low, P0137-02 Sensor 1/2 Voltage Too Low, P0151-02 Sensor 2/1 Voltage Too Low, P0157-02 Sensor 2/2 Voltage Too Low
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0132-02 Sensor 1/1 Voltage Too High, P0138-02 Sensor 1/2 Voltage Too High, P0152-02 Sensor 2/1 Voltage Too High, P0158-02 Sensor 2/2 Voltage Too High
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0133-02 Sensor 1/1 Slow Response, P0139-02 Sensor 1/2 Slow Response, P0153-02 Sensor 2/1 Slow Response, P0159-02 Sensor 2/2 Slow Response
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0135-02 Sensor 1/1 Heater Failure, P0141-02 Sensor 1/2 Heater Failure, 0P0155-02 Sensor 2/1 Heater Failure, P0161-02 Sensor 2/2 Heater Failure
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0136-02 Sensor 1/2 Heater Circuit Malfunction
    • When Monitored and Set Condition:
    • Possible Causes
  • P0171-1/1 Fuel System Lean, P0174-2/1 Fuel System Lean
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0172-1/1 Fuel System Rich, P0175-2/1 Fuel System Rich
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0201-Injector #1 Control Circuit, P0202-Injector #2 Control Circuit, P0203-Injector #3 Control Circuit, P0204-Injector #4 Control Circuit, P0205-Injector #5 Control Circuit, P0206-Injector #6 Control Circuit, P0207-Injector #7 Control Circuit, P0208-Injector #8 Control Circuit
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0300-Multiple Cylinder Mis-Fire, P0301-Cylinder #1 Misfire, P0302-Cylinder #2 Misfire, P0303-Cylinder #3 Misfire, P0304-Cylinder #4 Misfire, P0305-Cylinder #5 Misfire, P0306-Cylinder #6 Misfire, P0307-Cylinder #7 Misfire, P0308-Cylinder #8 Misfire
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0320-No Crank Reference Signal At Pcm
    • When Monitored and Set Condition:
    • Possible Causes
  • P0325-Knock Sensor #1 Circuit, P0330-Knock Sensor #2 Circuit
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0340-No Cam Reference Signal At Pcm
    • When Monitored and Set Condition:
    • Possible Causes
  • P0351-Ignition Coil #1 Primary Circuit, P0352-Ignition Coil #2 Primary Circuit, P0353-Ignition Coil #3 Primary Circuit, P0354-Ignition Coil #4 Primary Circuit, P0355-Ignition Coil #5 Primary Circuit, P0356-Ignition Coil #6 Primary Circuit, P0357-Ignition Coil #7 Primary Circuit, P0358-Ignition Coil #8 Primary Circuit
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0351-Ignition Coil #1 Primary Circuit, P0352-Ignition Coil #2 Primary Circuit, P0353-Ignition Coil #3 Primary Circuit
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0420-1/1 Catalytic Converter Efficiency, P0432-2/1 Catalytic Converter Efficiency
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0441-EVAP Purge Flow Monitor
    • When Monitored and Set Condition:
    • Possible Causes
  • P0442-EVAP Leak Monitor Medium (0.040) Leak Detected, P0455-EVAP Leak Monitor Large Leak Detected, P0456-EVAP Leak Monitor Small (0.020) Leak Detected
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0443-EVAP Purge Solenoid Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P0460-Fuel Level Unit No Change Over Miles, P0461-Fuel Level Unit No Change Over Time
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P0462-Fuel Level Sending Unit Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P0463-Fuel Level Sending Unit Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P0500-No Vehicle Speed Signal
    • When Monitored and Set Condition:
    • Possible Causes
  • P0505-Idle Air Control Motor Circuits
    • When Monitored and Set Condition:
    • Possible Causes
  • P0523-Oil Pressure Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P0601-Pcm Internal Controller Failure
    • Possible Causes
  • P0622-Generator Field Not Switching Properly
    • When Monitored and Set Condition:
    • Possible Causes
  • P0645-A/C Clutch Relay Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P0700-TCM Controller DTC Present
    • Possible Causes
  • P1195-O2 Sensor 1/1 Slow During Catalyst Monitor, P1196-O2 Sensor 2/1 Slow During Catalyst Monitor
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P1281-Engine Is Cold Too Long
    • When Monitored and Set Condition:
    • Possible Causes
  • P1282-Fuel Pump/System Relay Control Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1294-Target Idle Not Reached
    • When Monitored and Set Condition:
    • Possible Causes
  • P1296-No 5-Volts To Map Sensor
    • When Monitored and Set Condition:
    • Possible Causes
  • P1297-No Change In Map From Start To Run
    • When Monitored and Set Condition:
    • Possible Causes
  • P1299-Vacuum Leak Found
    • When Monitored and Set Condition:
    • Possible Causes
  • P1388-ASD Relay Control Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1389-No ASD Relay Output Voltage At Pcm
    • When Monitored and Set Condition:
    • Possible Causes
  • P1391-Intermittent Loss Of CMP Or CKP
    • When Monitored and Set Condition:
    • Possible Causes
  • P1398-Mis-Fire Adaptive Numerator At Limit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1486-EVAP Leak Monitor Pinched Hose Found
    • When Monitored and Set Condition:
    • Possible Causes
  • P1489-High Speed Fan Relay Control Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1490-Low Speed Fan Relay Control Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1491-Cooling Fan Relay Control Circuit
    • Possible Causes
  • P1492-Ambient/Battery Temp Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P1493-Ambient/Battery Temp Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P1494-Leak Detection Pump Switch Or Mechanical Fault
    • When Monitored and Set Condition:
    • Possible Causes
  • P1495-Leak Detection Pump Solenoid Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1499-Hydraulic Fan Solenoid Circuit
    • When Monitored and Set Condition:
    • Possible Causes
  • P1594-Charging System Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P1595-Speed Control Solenoid Circuits, P1683-Speed Control Power Circuit
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • P1596-Speed Control Switch Always High
    • When Monitored and Set Condition:
    • Possible Causes
  • P1597-Speed Control Switch Always Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P1598-A/C Pressure Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
  • P1599-A/C Pressure Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P1682-Charging System Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
  • P1685-Wrong Or Invalid Key Message Received From Skim
    • When Monitored and Set Condition:
    • Possible Causes
  • P1686-No Skim Bus Message Received
    • When Monitored and Set Condition:
    • Possible Causes
  • P1687-No Cluster Bus Message
    • When Monitored and Set Condition:
    • Possible Causes
  • P1696-Pcm Failure EEPROM Write Denied
    • Possible Causes
  • P1698-No Bus Message From TCM
    • Possible Causes
  • P1899-TRS Performance
    • When Monitored and Set Condition:
    • Possible Causes
• Sentry Key Immobilizer - Symptoms
  • Symptom List: ANTENNA FAILURE, COP FAILURE, EEPROM FAILURE, INTERNAL FAULT, RAM FAILURE, SERIAL LINK INTERNAL FAULT, STACK OVERFLOW FAILURE
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • Symptom List: PCM STATUS FAILURE, SERIAL LINK EXTERNAL FAULT
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • Symptom List: ROLLING CODE FAILURE, VIN MISMATCH
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
  • Symptom List: TRANSPONDER COMMUNICATION FAILURE, TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE, TRANSPONDER ID MISMATCH, TRANSPONDER RESPONSE MISMATCH
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
• Starting - Symptoms
  • Symptom: *CHECKING FUEL DELIVERY>
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *CHECKING HARDS START (FUEL DELIVERY SYSTEM)
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *ENGINE CRANKS DOES NOT START
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *FUEL PRESSURE LEAK DOWN
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *NO CRANK CONDITION
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *NO RESPONSE FROM PCM WITH A NO START CONDITION
    • Possible Causes
    • Diagnostic Procedure
  • Symptom: *START AND STALL CONDITION
    • Possible Causes
    • Diagnostic Procedure
• Transfer Case - Mechanical - Diagnostic Tests
  • P0836-4WD MUX Switch Stuck
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0837-4WD MUX Switch Performance
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0838-4WD Mode Sensor Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0839-4WD Mode Sensor High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
• Transmission - Re - Diagnostic Tests
  • P0711-Trans Temp Sensor, No Temp Rise After Start
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0712-Trans Temp Sensor Voltage Too Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0713-Trans Temp Sensor Voltage Too High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0720-Low Output Speed Sensor - Rpm Above 15 Mph
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0743-Torque Converter Clutch Solenoid/Trans Relay Circuits
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0748-Pressure Sol Control/Trans Relay Circuits
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0751-O/D Switch Pressed (Lo) More Than 5 Minutes
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P0753-Trans 3-4 Shift Sol/Trans Relay Circuits
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1740-TCC O/D Sol Performance
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1756-Gov Press Not Equal To Target @ 15-20 Psi, P1756-Gov Press Not Equal To Target @ 35 - 40 Psi (Diesel)
    • Notes
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1757-Gov Press Above 3 Psi In Gear With 0 Mph
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1762-Gov Press Sen Offset Volts Too Lo Or High
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1763-Governor Pressure Sensor Volts Too Hi
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1764-Governor Pressure Sensor Volts Too Low
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
  • P1765-Trans 12 Volt Supply Relay CTRL Circuit
    • When Monitored and Set Condition:
    • Possible Causes
    • Diagnostic Procedure
• Verification Tests
  • Body
  • Powertrain
  • Skis
  • Transmission
• Component Locations
  • Control Modules And PDC
  • Data Link Connector
  • Sensors And Solenoids
  • Switches
• Connector PINOUTS
  • Connector PINOUTS