M45x AWD V8-4.5L (VK45DE) (2008)
PDU (Power Distribution Unit)
Work Flow
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to PG-29, "System Description". See: Description and Operation/PDU (Power Distribution Unit)
3. Confirm that Intelligent Key system operates normally.
4. Repair or replace any malfunctioning parts.
Refer to PG-35, "Trouble Diagnosis Symptom Chart". See: Symptom Related Diagnostic Procedures/Trouble Diagnosis Symptom Chart
5. INSPECTION END
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.