Check voltage between terminals TP and SGTP of AC amplifier connector

SGTP

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PREPARATION:

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

(b) Turn ignition switch ON. CHECK:

Change the set temperature to activate the air mix damper, and measure the voltage between terminals TP and SGTP of A/C amplifier connector every time the set temperature is changed. OK:

I18165

Set Temperature

Voltage

Max. COOL

3.5 - 4.5 V

Max. WARM

As the set temperature increases, the voltage decreases gradually without interruption.

Proceed to next circuit inspection shown on problem symptoms table (See page DI-886). However, if DTC 31 or 41 is displayed, check and replace A/C amplifier.

Toyota Serwomotor Dumper Air Mix

PREPARATION:

Remove air mix control servomotor (See page AC-56). CHECK:

Measure resistance between terminals 1 and 2 of air mix control servomotor connector.

While operating air mix control servomotor as shown in the procedure on page DI-918, measure resistance between terminals 2 and 3 of air mix control servomotor connector. OK:

Position

Resistance

Max. COOL

S.6 - 6.7 kQ

Max. WARM

As the air mix control servomotor moves from cool side to hot side, the resistance decreases gradually without interruption.

HINT:

As the air mix control servomotor moves from cool side to hot side, the resistance decreases gradually without interruption.

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