Is there continuity?
YES -
Go to step 20.
NO -
Repair an open in the wire(s) between the climate control unit and the front power transistor.?
20. Turn the ignition switch to ON (II).
21. Measure the voltage between body ground and climate control unit connector A (40P) terminals No. 9 and No. 10 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 A (40P).
23. Test the front power transistor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General Diagnostics/Front
Blower Power Transistor Test.
Is the front power transistor OK?
YES -
Check for loose wires or poor connections at climate control unit connector A (40P) and at the front 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 front power transistor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General Diagnostics/Front
Blower Power Transistor Test.?
24. Disconnect the jumper wire.
25. Disconnect the front blower motor 2P connector.
