ECU Power Source Circuit

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: ECU Power Source Circuit
- ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the air conditioning amplifier.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (A/C)

(a) Remove the A/C fuse from the main body ECU.





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

Standard Resistance:





(c) Reinstall the A/C fuse.

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

2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY, BODY GROUND)





(a) Disconnect the H24 and H67 air conditioning amplifier connectors.

(b) Measure the resistance and voltage according to the value(s) in the table below.

Standard Resistance:





Standard Voltage:





(c) Reconnect the air conditioning amplifier connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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