22 · Diagnostics

Starter motor not working

Fault diagnosisStarter motor not working

STARTER MOTOR NOT WORKING

The instruments light up when the ignition is turned on. In the START position the starter motor does not turn

1	CHECKING STARTER MOTOR POWER SUPPLY	All OK	Problems met	Operation
		Results of the tests
	Check that the supply lead between battery and starter motor is undamaged and properly secured	Continue to Step 2	loose fastenings on lead	Secure lead
2	CHECKING STARTER MOTOR RELAY POWER SUPPLY	All OK	Problems met	Operation
	Check the connection between switch and relay	Continue to Step 3	Lack of continuity	Use a tester to check if the lack of continuity is between switch and engine bay control unit, or in the engine bay between engine bay control unit and starter motor relay. See E5010 STARTING AND RECHARING
	Check the connection between switch and relay	Continue to Step 3	Lack of continuity in the control unit.	If the lack of continuity is in the control unit Op. 5505A13, replace the control unit. Otherwise repair the lead in question.
3	CHECKING SWITCH	All OK	Problems met	Operation
	Check the switch is working and undamaged. Operate the switch	Continue to Step 4	Lack of contact at pin 50	Replace switch Op. 5520A12
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

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