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8. Check for continuity between the following
terminals of the HVAC control unit 24P connector
and the air mix control motor 7P connector.
24P:
No. 5
No. 6
*01
Is there continuity?
YES
−
NO
control unit and the air mix control motor.
7P:
No. 1
No. 2
HVAC CONTROL UNIT 24P CONNECTOR
Wire side of female terminals
PNK
LT BLU
PNK
LT BLU
AIR MIX CONTROL MOTOR 7P CONNECTOR
Wire side of female terminals
−
Go to step 9.
Repair open in the wire(s) between the HVAC
9. Check for continuity between body ground and the
HVAC control unit 24P connector No. 5 and No. 6
terminals individually.
HVAC CONTROL UNIT 24P CONNECTOR
PNK
LT BLU
Wire side of female terminals
Is there continuity?
−
YES
Repair short to body ground in the wire(s)
between the HVAC control unit and the air mix
control motor.
NO
−
Substitute a known-good HVAC control unit,
and recheck. If the symptom/indication goes away,
replace the original HVAC control unit.
*02
21-21