Description and Diagnosis Procedure

SYSTEM: Air Conditioning Cut Control Circuit

CIRCUIT DESCRIPTION



This circuit cuts air conditioning operation during vehicle acceleration in order to increase acceleration performance. During acceleration with the vehicle speed at 16 mph or less, engine speed at 1,200 rpm or less and throttle valve opening angle at 60° or more, the air conditioning magnet switch is turned OFF for several seconds.

DIAGNOSTIC PROCEDURE
1. CHECK VOLTAGE AT TERMINAL "ACT".
- If not OK proceed to step 2.
- If OK check and replace ECM.
2. CHECK FOR OPEN AND SHORT IN HARNESS AND CONNECTOR BETWEEN ECM AND AIR CONDITIONING AMPLIFIER.
- If OK check and replace Air Conditioning Amplifier.
- If not OK repair or replace harness or connector.