IG Power Source Circuit: Procedure
- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)
- Disconnect the A/C amplifier connector.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
Tester Connection Condition Specified Condition E8-8 (IG+) - Body ground*1 Ignition switch: OFF Below 1 V Ignition switch: ON 11 to 14 V E73-14 (IG+) - Body ground*2 Ignition switch: OFF Below 1 V Ignition switch: ON 11 to 14 V - *1: for 2AZ-FE
- *2: for 2ZR-FE
TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to A/C Amplifier) (for 2AZ-FE)*b Front view of wire harness connector
(to A/C Amplifier) (for 2ZR-FE)
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND)
- Disconnect the A/C amplifier connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Condition Specified Condition E8-12 (GND) - Body ground*1 Always Below 1 Ω E73-24 (GND) - Body ground*2 Always Below 1 Ω - *1: for 2AZ-FE
- *2: for 2ZR-FE
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 3
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE