Diagnosis system (IPDM E/R)
Power supply and ground circuitCheck cooling fan relay
Description
The electrical load signal (Headlamp switch signal, rear window defogger
switch signal, etc.) is transferred via
the CAN communication line from BCM to ECM via the IPDM E/R.
Component Function Check
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Turn ignition switch ON.
Connec ...
Hazard function
Symptom Table
HAZARD AND BUZZER REMINDER FUNCTION MALFUNCTION
NOTE:
Before performing the diagnosis in the following table, check
"Work flow". Refer to DLK-9, "Work Flow".
If the following symptoms are detected, check systems shown in
the "Diagnosis/service procedure" column ...
Main line between DLC and HVAC circuit
Diagnosis Procedure
1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect the following harness connectors.
ECM
A/C auto amp.
Check the continuity between the data link connector and the A/C ...