Back-Up Power Source Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: Back-up Power Source Circuit
- Back-up Power Source Circuit

DESCRIPTION

This is back-up power source circuit for the A/C amplifier. Power is supplied even when turning the ignition switch off and is used for diagnostic trouble code memory, etc.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (A/C)

(a) Remove the A/C fuse from the instrument panel J/B.





(b) Measure the resistance according to the value(s) in the table blow.

Standard Resistance:





NG -- REPLACE FUSE (A/C)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (B - BODY GROUND)

(a) Remove the A/C amplifier and disconnect the connector.





(b) Measure the voltage according to the value(s) in the table blow.

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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