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AIR MIX ACTUATOR INSPECTION

id074000802500

  Caution

  • If the lever position exceeds the operation range shown in the figure, the circuit in the actuator could be damaged. Always perform an actuator operation inspection with the lever movement within the range shown in the figure.

1. Connect battery positive voltage to terminal D or F and ground to terminal F or D of the air mix actuator.

2. Verify that the air mix actuator operates as shown below.

  • If not as specified, replace the air mix actuator.

Connection | Movement
--- | ---
B+ | GND
D | F | HOT → COLD (L.H.D.) COLD → HOT (R.H.D.)
F | D | COLD → HOT (L.H.D.) HOT→COLD (R.H.D.)

L.H.D.

R.H.D.

3. Verify that the resistance between the terminals of the air mix actuator are as shown in the graph.

  • If not as specified, replace the air mix actuator.