HAIMA 7 - Page 439

Troubleshotting
U-29
Step Inspection Action
control unit and air mix actuator to
determine whether it is short to ground.
l Is there continuity between terminal e
(voltage divider signal) of air mix actuator
and ground?
climate control unit and air mix actuator,
and then go to step 21.
No Go to next step.
*8 Inspect wiring harness between rear climate
control unit and air mix actuator for short
with b+ (positive battery voltage)
l Turn ignition switch to on position.
l Measure wiring harness-side voltage of
terminal e (voltage divider input signal) of
air mix actuator.
l Is voltage approximately equivalent to b+
(positive battery voltage)?
Yes Repair wiring harness between rear
climate control unit and air mix actuator,
go to step 21.
No Go to next step.
*9
Inspect continuity of wiring harness between
rear climate control unit and air mix
actuator.
l Is circuit between terminal e of rear climate
control unit and terminal a of air mix
actuator close?
Yes Go to next step.
No Repair wiring harness between rear
climate control unit and air mix actuator,
go to step 21.
*10
Inspect wiring harness between rear climate
control unit and air mix actuator to
determine whether it is short to ground.
l Is there continuity between terminal e of
rear climate control unit connector and
ground?
Yes Repair wiring harness between rear
climate control unit and air mix actuator,
go to step 21.
No Go to next step.
*11
Inspect wiring harness between rear climate
control unit and air mix actuator to
determine whether it is short to b+ (positive
battery voltage)
l Turn ignition switch to on position.
l Measure voltage at terminal e of rear
climate control unit connector.
l Is voltage approximately equivalent to b+
(positive battery voltage)?
Yes Repair wiring harness between rear
climate control unit and air mix actuator,
go to step 21.
No Go to next step.