Tundra Access Cab SR5 2WD V6-3.4L (5VZ-FE) (2000)
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b. Connect the connector to A/C control assembly and inspect wire harness side from the back side, as shown in the chart.
Test condition:
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Run engine at idle speed
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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.
Heater Control
INSPECT HEATER CONTROL DIAL AND LEVER OPERATION
Move the control dial and lever left to right and check for stiffness and binding through the full range of the levers.
If click sound can not be heard or recoil is felt, adjust the control cable or check control cable and heater control assembly.