Engine Controls - Hot Engine Cranks, No Start

Restarting not possible with hot engine

Topic number LI54.21-P-052569

Version 1

Design group 54.21 Control modules/modules

Date 01-10-2012

Validity Engine 272, engine 273
Vehicle production period: November 2006 to May 2007

Reason for change Remedy section updated

Complaint
The vehicle cannot be started when the engine is hot - cranks no start.

Engine start only possible after engine has cooled.

The starter turns.

No faults are stored in the fault memory of the motor electronics control module (ME).

Cause
Due to an open circuit in the motor electronics control module (ME), no signal is sent to the fuel pump relay.

Remedy
Check the signal that activates the fuel pump from the ME control module by monitoring pin 17 and pin 4 on the small socket of N3/10 ME control module:

1. With the key in position 2 there should be 12 volts present across the pins, if not check the wiring from the ME control module to the fuel pump relay or the fuel pump control module.

2. When cranking the engine, the 12 volts should go to 0 volts, if not it may be due to an open circuit in the ME control module. In this case, replace the ME control module and retest the signal to the fuel pump relay or the fuel pump control module. Refer to EPC net for applicable part number.

Dealers should submit copy of short and other test when replacing components.

Dealers should submit DTS case.





Symptoms





Operation numbers/damage codes