Air Conditioning System (For Manual Air Conditioning System) Ig Power Source Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (ECU-IG2)
CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BATTERY)
CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BODY GROUND)
AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) - IG Power Source Circuit |
DESCRIPTION
This is the main power source supplied to the air conditioning amplifier when the ignition switch is turned on (IG). This power source is used for operating components such as the air conditioning amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Start the engine before the inspection. Check the IG1 relay or battery if the engine does not start.
Remove the ECU-IG2 fuse from the instrument panel junction block.
Measure the resistance of the fuse.
- Standard resistance:
- Below 1 Ω
| 2.CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BATTERY) |
Disconnect the E42 amplifier connector.
Measure the voltage of the wire harness side connector.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
E42-14 (IG+) - Body ground
| Ignition switch on (IG)
| 10 to 14 V
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 3.CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BODY GROUND) |
Disconnect the E42 amplifier connector.
Measure the resistance of the wire harness side connector.
- Standard resistance:
Tester Connection
| Specified Condition
|
E42-24 (GND) - Body ground
| Bellow 1 Ω
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
