Tacoma 4WD L4-2.7L (2TR-FE) (2005)
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Control Module HVAC: Component Tests and General Diagnostics
INSPECT AIR-CONDITIONER AMPLIFIER ASSEMBLY
a. Disconnect the connector from the air-conditioner amplifier assembly and inspect the connector on the wire harness side, as shown in the table.
If the results are not as specified, inspect the circuits connected to the other parts.