IG Power Source Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: IG Power Source Circuit
- IG Power Source Circuit

DESCRIPTION

The circuit supplies a power source to the A/C amplifier, servo motor, etc.

WIRING DIAGRAM





INSEPCTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (AM1, MPX-IG)

(a) Remove the AM1 and MPX-IG fuses from the driver side junction block.

(b) Measure the resistance of the fuses.

Standard resistance:

Below 1 Ohms

NG -- REPLACE FUSE
OK -- Continue to next step.

2. INSPECT RELAY (Marking: IG1)





(a) Remove the IG1 relay from the driver side junction block.

(b) Measure the resistance of the relay.

Standard resistance:





NG -- REPLACE RELAY
OK -- Continue to next step.

3. CHECK WIRE HARNESS (A/C AMPLIFIER - BODY GROUND)





(a) Disconnect the A10 amplifier connector.

(b) Measure the voltage and resistance of the wire harness side connector.

Standard voltage:

Standard resistance










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE