DTC P2530: Ignition Switch Run Position Circuit: Notes
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Improper idling
CAUTION:
Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD
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NOTE:
After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE
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Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM .
- CHECK ECM CONNECTOR
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Check the connecting condition of ECM connector.
Is the ECM connector correctly connected?
Yes: Go to 2.
No: Connect the ECM connector correctly.
- CHECK INPUT VOLTAGE OF ECM
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- Turn the ignition switch to ON.
- Measure the voltage between ECM connector and engine ground while wiggling the harness between ECM connector and M/B.
Connector & terminal
(B61) No. 54 (+) - Engine ground (-):
Is the voltage 8 V or more all the time?
Yes: Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE: In this case, the following items may be the cause of fault.- Poor contact of ECM connector
- Poor contact of MB-IG relay
No: Repair the following item.
- Blown out of fuse
- Open circuit or short circuit to ground in harness between M/B and ECM connector
- Faulty MB-IG relay
- Poor contact of MB-IG relay