ECM - Intermittent Vehicle No Start

No: 86/26/97/NAS

Ref: WSM section 86

Issue: 1

Date: 10/06/97

PRIDE V 6-32

Intermittent Failure of Engine to Start

AFFECTED VEHICLE RANGE:
RANGE ROVER (LP) ALL WITH SECURITY SYSTEM

SITUATION:

ENGINE WILL NOT CRANK

Intermittently the vehicle will not crank. Some or all of the following symptoms may be present:

^ The "Check Engine" light does not illuminate when the key is turned to position II (run).

^ After turning the key off (position I) then on again, the vehicle starts normally.

RESOLUTION:

MODIFY IMMOBILIZATION STRATEGY

NOTE:
A record must be kept of all vehicles modified in this fashion for future repair.

The engine is immobilized due to a mis-communication between the BeCM and GEMS ECM. The technician must inspect and verify two circuits and six electrical terminals as outlined in the repair procedure.

When it has been determined by the electrical inspection that the fault is in the ECM, your PSR will be able to modify the-immobilization strategy.

NOTE:
The repairs outlined in this TIB are to be performed to resolve customer complaint of the symptoms described.

PARTS INFORMATION:

No parts used

WARRANTY CLAIMS:

86.77.89/36 Time 1.00 hrs.
Modify Immobilization Strategy

COMP CODE: 7P6Y

Normal warranty policy and procedures apply

REPAIR PROCEDURE:

INSPECTION OF ELECTRICAL CONNECTIONS





1. Remove the terminals from the connector housings to inspect the pin and socket terminals and the quality of the wiring crimps for each listed in the illustration.

2. Cautiously deform each pin and socket to improve connection.

3. Assemble connectors.

4. Use an ohmmeter to verify continuity between the following:

^ C112 cavity 5 to C507 cavity 26
^ C114 cavity 5 to C505 cavity 22.

5. Verify that neither circuit is short-circuited to vehicle ground.

MODIFYING IMMOBILIZATION STRATEGY

When it has been determined that there are no electrical problems with the security system, contact your PSR, he will be able to modify the immobilization strategy.