On-Vehicle Inspection

AIR CONDITIONING CONTROL ASSEMBLY (Center Cluster Integration)
ON-VEHICLE INSPECTION
1. REMOVE CENTER CLUSTER INTEGRATION PANEL
2. Access cab, Standard cab: INSPECT A/C CONTROL ASSEMBLY CIRCUIT
(a) Disconnect the connector from the A/C control assembly and inspect the connector on the wire harness side, as shown in the chart below.
Test condition: Turn ignition switch to ON








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 control assembly and inspect wire harness side from the back side, as shown in the chart below.
Test condition:
- Run engine at idle speed
- Set on 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.

3. Double cab: INSPECT A/C CONTROL ASSEMBLY CIRCUIT
(a) Disconnect the connector from the A/C control assembly and inspect the connector on the wire harness side, as shown in the chart below.
Test condition: Turn ignition switch to ON








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 control assembly and inspect wire harness side from the back side, as shown in the chart below.
Test condition:
- Run engine at idle speed
- Set on 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.