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AIR MIX ACTUATOR INSPECTION

BHE074061415W02

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

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

Terminal | Air mix actuator operation
--- | ---
F | G
B+ | Ground | COLD→HOT (L.H.D.) HOT→COLD (R.H.D.)
Ground | B+ | HOT→COLD (L.H.D.) COLD→HOT (R.H.D.)

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

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

L.H.D.

R.H.D.