Page text (OCR transcript)
AC–64
AIR CONDITIONING SYSTEM – TROUBLESHOOTING
4 Check voltage between terminal MGC of A/C amplifier connector and body ground.
ON
Connect
MGC
BE3840
N08802
P 1. Remove A/C amplifier with connectors still connected.
2. Start the engine.
C Check voltage between terminal A/C IN of A/C amplifier connector and body ground when magnetic clutch is on and off by A/C switch.
OK
Magnetic Clutch Voltage
ON Below 1 V
OFF 4 – 6 V
NG OK Go to step 7 .
5 Check voltage between terminal A/C of ECM and body ground.
ON
ECM
Connect
BE3840 AC2997
N08821
A/C
P 1. Remove the ECM with connectors still connected.
2. Turn ignition switch on.
C 1. Push the A/C switch on.
2. Measure voltage between terminal A/C of the ECM connector and body ground.
OK
Magnetic Clutch Voltage
ON Below 1 V
OFF 10 – 14 V
OK NG Check and replace ECM.
6 Check for open and short in harness and connector between A/C amplifier and ECM (See page IN–30).
OK NG Repair or replace harness or connector.
Check and replace A/C amplifier.
