M45x AWD V8-4.5L (VK45DE) (2008)
Power Distribution Module: Symptom Related Diagnostic Procedures
Function of Detecting Ignition Relay Malfunction
Function of Detecting Ignition Relay Malfunction
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When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail and parking lamps for 10 minutes to
indicate ignition relay malfunction.
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When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a CAN communication from BCM,
IPDM E/R lets tail lamp relay operate.
Trouble Diagnosis Symptom Chart