Inspection Procedure

INSPECTION PROCEDURE



1. CHECK IDLE AIR CONTROL VALVE.
(a) Disconnect idle air control valve connector.



(b) Measure resistance between terminals as shown.

Terminals: Resistance
5 (B1)<->4 (S1): 10 - 30 Ohms
5 (B1)<->6 (S3): 10 - 30 Ohms
2 (B2)<->1 (S2): 10 - 30 Ohms
2 (B2)<->3 (S4): 10 - 30 Ohms

(c) Remove idle air control valve.



(d) Connect the battery positive lead to terminals 5 (B1) and 2 (B2).
(e) Connect the negative lead to terminals 4 (S1) - 1 (S2) - 6 (S3) - 3 (S4) in that order.

OK: The valve moves in the closing direction.




(f) Connect the battery positive lead to terminals 5 (B1) and 2 (B2)
(g) Connect the negative lead to terminals 3 (S4) - 6 (S3) - 1 (S2) - 4 (S1) in that order.

OK: The valve moves in the opening direction.

^ If OK proceed to step 2.
^ If not OK replace idle air control valve.

2. CHECK FOR OPEN AND SHORT IN HARNESS AND CONNECTOR BETWEEN THE EFI MAIN RELAY AND IDLE AIR CONTROL VALVE, IDLE AIR CONTROL VALVE AND ECM.
^ If OK proceed to "Diagnosis By Symptom".
Symptom Related Diagnostic Procedures
^ If not OK repair or replace harness or connector.