T100 Extra Cab Pickup 4WD V6-3.4L (5VZ-FE) (1997)
Control Module HVAC: Testing and Inspection
ON-VEHICLE INSPECTION
1. REMOVE GLOVE COMPARTMENT DOOR
2. INSPECT AMPLIFIER CIRCUIT
a. Disconnect the amplifier connector and inspect the connector on wire harness side, as shown in the chart.
Test conditions:
-
Ignition switch ON
-
Temperature control lever MAX COOL
-
Blower control lever HI
If circuit is as specified, try replacing the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other
parts.
b. Connect the connector to A/C amplifier and inspect wire harness side connector from the back side, as shown in the chart.
Test conditions:
-
Ignition switch ON
-
A/C switch ON
-
Temperature control dial MAX COOL
-
Blower control lever HI
-
Install manifold gauge set
If circuit is as specified. try replacing the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other
parts.