Sienna LE V6-3.0L (1MZ-FE) (1998)
^ Temperature control dial at "Max. COOL" position
^ A/C switch ON Set manifold gauge set
^ If the circuits is as specified, try to replace the amplifier with a new one.
^ If the circuits is not as specified, inspect the circuits connected to other parts.
2. 5-Door Dual A/C:
INSPECT A/C AMPLIFIER CIRCUIT
a. 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
If the circuit is not as specified, inspect the circuits connected to other parts
b. Connect the connector to the amplifier and inspect the wire harness side connector from the back side, as shown in the chart.