Is there continuity?
YES -
Go to step 20.
NO -
Repair an open in the wire(s) between the climate control unit and the rear power transistor.?
20. Turn the ignition switch to ON (II).
21. Measure the voltage between body ground and climate control unit connector B (14P) terminals No. 13 and No. 14 individually.
Is there any voltage?
YES -
Repair a short to power in the wire(s).?
NO -
Go to step 22.
22. Reconnect climate control unit connector B (14P).
23. Test the rear power transistor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General Diagnostics/Rear
Blower Power Transistor Test.
Is the rear power transistor OK?
YES -
Check for loose wires or poor connections at climate control unit connector B (14P) and at the rear power transistor 4P connector. If the
connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate
control unit See: Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
NO -
Replace the rear power transistor.?
24. Disconnect the jumper wire.
25. Disconnect the rear blower motor 2P connector.
