Control Module HVAC: Testing and Inspection

Automatic A/C


Auto Amp. Terminals and Reference Value

Pin connector terminal layout:

Auto Amp. Inspection Table Part 1:

Auto Amp. Inspection Table Part 2:

INSPECTION OF AUTO AMP.
Measure voltage between each terminal and body ground by following "AUTO AMP. INSPECTION TABLE".


Auto Amp. Check









Check power supply circuit for auto amp. with ignition switch ON. Measure voltage across terminal Nos. 26, 27, 33 and body ground.








Check body ground circuit for auto amp. with ignition switch OFF. Check for continuity between terminal Nos. 32, 14 and body ground.

If OK, check auto amp. ground circuit.

If NG, repair or replace harness.

Check 7.5 A fuse (No. 5), 10 A fuse (No. 8) (located in the fuse block) and 15 A fuses (Nos. 1 and 2, located in the fuse block).

If fuses are OK, check for open circuit in wiring harness. Repair or replace as necessary.

If fuses are NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.

NOTE: If OK, replace auto amp.



Fan Control Amp.

Fan Control Amp.: