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.
26. Measure the voltage between front blower motor 2P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Replace the front blower motor See: Heating and Air Conditioning/Blower Motor/Service and Repair/Blower Unit Component Replacement.?
NO -
Go to step 27.
27. Turn the ignition switch to LOCK (0).
28. Remove the front blower motor relay from the relay block, and test it See: Power and Ground Distribution/Testing and Inspection/Power
Relay Test.
Is the relay OK?
YES -
Go to step 29.
NO -
Replace the front blower motor relay.?
29. Measure the voltage between front blower motor relay 4P socket terminal No. 1 and body ground.
