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.