Sienna LE V6-3.0L (1MZ-FE) (1998)
Control Module HVAC: Testing and Inspection
1. Single A/C and 4-Door Dual A/C:
INSPECT A/C AMPLIFIER CIRCUIT
a. Remove lower No.2 finish panel
b. Disconnect the connector from amplifier and inspect the connector on wire harness side, as shown in the chart.
Test conditions:
^
Turn ignition switch to ON
^
Blower speed control switch at "HI" position
If the circuit is not as specified, inspect the circuit connected to other parts.
c. Connect the connector to amplifier and inspect the wire harness connector from the back side, as shown in the chart.
Test conditions:
^ Running engine at idle speed
^ Blower speed control switch at "HI" position