Check voltage between terminals TPI and SGTPI of AC amplifier connector

PREPARATION:

(a) Remove center cluster module control with connectors still connected.

(b) Turn ignition switch ON. CHECK:

Press REC/FRS switch to change air inlet between fresh and recirculation air and measure voltage between terminals TPI and SGTPI of A/C amplifier when the air inlet servomotor operates. OK:

REC/FRS Switch

Voltage

REC

3.5 - 4.5 V

FRS

As the air inlet control servomotor is moved from REC side to FRS side, the voltage decreases gradually without interruption.

Proceed to next circuit inspection shown on problem symptoms table (See page DI-886). However, if DTC 32 or 42 is displayed, check and replace A/C amplifier.

PREPARATION:

Remove air inlet control servomotor (See page AC-33).

While operating air inlet control servomotor as in the procedure on page DI—921, and measure resistance between terminals 2 and 3 of air inlet control servomotor connector. OK:

Resistance :

Damper Position

REC side

FRS side

Resistance

HINT:

As the air inlet control servomotor is moved from REC side to FRS side, the resistance decreases gradually without interruption.

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