DTC P2530: Ignition Switch Run Position Circuit: Notes
1. - DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Improper idling
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM .
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 .
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 .
- CHECK ECM CONNECTOR
.
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
.
- Turn the ignition switch to ON.
- Measure the voltage between ECM connector and engine ground while wiggling the harness between ECM connector and F/B connector.
Connector & terminal
(B134) No. 46 (+) - 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 F/B connector
- Poor contact of IG2 relay
No : Repair the following item.
- Blown out of fuse
- Open circuit or short circuit to ground in harness between M/B and F/B connector
- Open circuit or short circuit to ground in harness between F/B connector and ECM connector
- Poor contact of F/B connector
- Defective IG2 relay
- Poor contact of IG2 relay