FRONT AIR MIX ACTUATOR INSPECTION

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Driver Side

1. Connect battery positive voltage to front air mix actuator terminal F (or G), connect terminal G (or F) to ground, and then verify that the front air mix actuator operates as shown in the table.

  • If the operation condition is not normal, replace the front air mix actuator.

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Terminal | Front air mix actuator operation
--- | ---
F | G
B+ | Ground | HOT → COLD
Ground | B+ | COLD → HOT

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2. Verify that the resistance between terminals A and E, and E and C matches the front air mix actuator operation as shown in the graph.

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  • If the operation condition and resistance are not normal, replace the front air mix actuator.

Passenger Side

1. Connect battery positive voltage to front air mix actuator terminal F (or G), connect terminal G (or F) to ground, and then verify that the front air mix actuator operates as shown in the table.

  • If the operation condition is not normal, replace the front air mix actuator.

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L.H.D.

Terminal | Front air mix actuator operation
--- | ---
F | G
B+ | Ground | COLD → HOT
Ground | B+ | HOT → COLD

R.H.D.

Terminal | Front air mix actuator operation
--- | ---
F | G
B+ | Ground | HOT → COLD
Ground | B+ | COLD → HOT

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2. Verify that the resistance between terminals A and E, and E and C matches the front air mix actuator operation as shown in the graph.

L.H.D.

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R.H.D.

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  • If the operation condition and resistance are not normal, replace the front air mix actuator.