Troubleshooting
U-20
Step Inspection Action
and air intake actuator is short) or in front
climate control unit.
l Turn ignition switch to on position.
l Measure voltage between following front
climate control unit connector (12-pin for
air intake mode) terminals
— Terminal c (fresh signal)
— Terminal e (recirculate signal)
l Is voltage close to b+ (positive battery
voltage)?
No Replace front climate control unit, then
go to next step.
13
Inspect air intake control valve of blower
assembly.
l Is there any foreign material or obstruction
in the air intake control valve of blower
assembly?
Yes Remove obstruction, then go to step 15.
No Go to next step.
14
Verify that air intake control valve of blower
assembly is positioned firmly and properly.
l Is air intake control valve of blower
assembly firmly and properly positioned?
Yes Inspect air intake control valve for crack
or damage, then go to next step.
No Install air intake control valve firmly in
proper position, go to next step.
15
Verify if malfunction symptom occurs after
repair.
l Does malfunction disappear?
Yes Troubleshooting completed. Explain
conditions to customer.
No Recheck malfunction symptoms, and
repeat from step 1 if it reoccurs.
V. Temperature control of front climate control unit disabled.
5
Temperature control of front climate control unit disabled.
Malfunction
symptom
l Malfunction in air mix system or heater pipes of front a/c unit.
Possible causes
l Malfunction in rocker shaft cables of link or cable clamps in air mix system of
front a/c unit. Step 2
l Malfunction in front climate control unit air mix cable or cable clamp of bevel
gear set 2. step 4
l Malfunction in air mix control valve of front a/c unit. Steps 5 and 6
l Malfunction in heater pipeline. Step 7
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