Ford Corsar Repair Manual page 197

TROUBLE DIAGNOSES
DIAGNOSTIC PROCEDURE 1 (Cont'd)
ECM LAMP WON'T FLASH ANY CODE
(LAMP ON STEADY OR NO LIGHT)
Disconnect all ECM connectors.
Light off
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Light on Repair short to
earth in circuit AN100.
With testlight connected to earth, back probe ECM connector terminals 1, 32, 2,
44.
There should be no light on any of the four terminals.
(Please Note: Test light
6
4 watt).
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No Light
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Repair short to voltage
on circuit with light.
Reconnect ECM connectors
back probe ECM connector
terminal 44 with test light
to earth and note ECM light.
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Check for and repair open circuit in either
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Diagnostic request circuit AN114.
No Light or
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Earth circuit AN115 leading to diagnostic
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connector.
Connect Diagnostic Bridge.
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If engine cranks but won't run.
Go to Diagnostic Procedure 2.
Light on Steady
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Replace ECM.
Recheck Codes.
Flashes Codes
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Code 12 indicates no malfunctions have been detected.
Note and record any malfunction codes, and refer to
the appropriate Diagnostic Chart.