:  Dec 17, 2007



Overview

For information on the operation of the system, refer to the relevant workshop manual section.

Inspection and verification

. Verify the customer concern.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical Electrical
  • Gear selector lever cable adjustment (vehicles with automatic transmission)
  • Starter motor
  • Engine (turns freely)
  • Battery
  • Fuses Battery junction box (BJB) Megafuse
  • Starter relay
  • Wiring harness(es)
  • Damaged, loose or corroded connectors
  • Ignition switch
  • Generator
  • Transmission control module (TCM)
  • Engine control module (ECM)

. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

. Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart or DTC index.
  Make sure that all DTCs are cleared following rectification.
Make sure that all DTCs are cleared following rectification.

Symptom chart

Symptom Possible causes Action
The engine does not crank (starter motor does not turn)
  • Gear selector not in P or N position (vehicles with automatic transmission)
  • Battery
  • Starter relay
  • Invalid key code received by central junction box (CJB)
  • Harness/Connectors
  • Starter motor
  • Ignition switch
  • Generator
  • Transmission control module (TCM)
  • Engine control module (ECM)
  • Engine seized
Make sure the gear selector is in the P or N position and correctly adjusted. Check the battery condition and state of charge. Check for DTCs indicating an immobilizer fault. Check the starter motor relay, ignition switch and generator circuits. Refer to the electrical guides. Check for TCM and ECM DTCs. Check that the engine turns freely.
The engine does not crank (starter motor does turn)
  • Starter motor installation
  • Starter motor
  • Flywheel/Drive plate ring gear
Check the starter motor installation (fasteners tight, starter motor square to engine, etc). Check the flywheel/drive plate ring gear teeth for damage, foreign objects, etc.
Engine cranks too slowly
  • Battery
  • Harness/Connectors
  • Starter motor
  • Oil grade
Check the battery condition and state of charge. Check the starter motor circuits. Refer to the electrical guides. Check the engine oil grade and condition.
Engine cranks too fast
  • Low engine compression
Check the engine compressions.
Excessive starter motor noise
  • Starter motor
  • Flywheel/Drive plate ring gear
  • Starter motor installation/casing
Check the starter motor installation (fasteners tight, motor square to engine, etc). Check the starter motor casing condition. Check the flywheel/drive plate ring gear teeth for damage, foreign objects, etc.

DTC index

:
  Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

:
  For a full list of ECM DTCs, refer to workshop manual section 303-14 - Electronic Engine Controls.

DTC Description Possible causes Action
P061700 Starter Relay Circuit High
  • Starter relay drive circuit short circuit to battery
  • Starter relay failure
Check the starter relay operation. Refer to the electrical guides and check the starter relay circuit. Repair/renew as necessary.
P125900 Immobilizer to PCM Signal Error
  • Incorrect ID received from instrument pack
Configure the system using the approved diagnostic system.
P160200 Immobilizer/ECM Communication Error
  • CAN Link ECM/instrument cluster CAN timeout
Refer to the Network Communications section in the workshop manual.
P162100 Immobilizer Code Words Do Not Match
  • Challenge does not match
Configure the system using the approved diagnostic system.
P162200 Immobilizer ID Does Not Match
  • Key status unknown
Program the key using the approved diagnostic system.