Back-up Power Source Circuit

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): Back-up Power Source Circuit

Back-up Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)




(a) Disconnect the A/C amplifier connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE