W/Harness Inspection

P1507 Idle Charge Actuator Signal Low of Coil #2

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination,deterioration, or damage.
3. Has a problem been found?
YES
1) Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
1) Go to "Power circuit inspection" procedure.

Power Supply Circuit Inspection

1. Key "OFF".
2. Disconnect ISCA connector.
3. Key "ON".
4. Measure the voltage between terminal 2 of ISCA harness connector and chassis ground.
A. Specification : B+




5. Is the measured voltage within specification?
YES
1) Go to "Control circuit inspection" procedure.
NO
1) Repair Open or Short in power circuit and then, go to "Verification of Vehicle Repair" procedure.

Control Circuit Inspection

1. Check Open in control circuit
(1) Key "OFF".
(2) Disconnect ISCA connector and ECM connector.
(3) Measure the resistance between terminal 3 of ISCA harness connector and terminal 22/C01-2 of PCM harness connector. [A/T]
Measure the resistance between terminal 3 of ISCA harness connector and terminal 25/C01 of ECM harness connector. [M/T]
A. Specification : Below Approx 1 Ohms








(4) Is the measured resistance within specification?
YES
1) Go to "Check Short in Control circuit" procedure.
NO
1) Repair Open in control circuit and then, go to "Verification of Vehicle Repair" procedure.
2. Check Short in control circuit
(1) Key "OFF".
(2) Disconnect ISCA connector and ECM connector.
(3) Measure the resistance between terminal 3 of ISCA harness connector and chassis ground.
A. Specification : Infinite




(4) Is the measured resistance within specification?
YES
1) Go to "Component inspection" procedure.
NO
1) Repair Short to ground in control circuit and then, go to "Verification of Vehicle Repair" procedure.