Auto Air Conditioner Control Unit Power Supply Diagnosis - Isuzu 2000 Trooper Workshop Manual

Auto Air Conditioner Control Unit Power Supply Diagnosis

This check is required because a trouble on the auto
amplifier (control unit) power supply circuit or grounding
circuit prevents accurate troubleshooting.
Condition
Power source does not supply to
auto air conditioner control unit.
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–103
Possible cause
—
Correction
Refer to Chart A
D08RY00138