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.
26. Measure the voltage between rear blower motor 2P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Replace the rear blower motor See: Heating and Air Conditioning/Blower Motor/Service and Repair/Rear Blower Motor Replacement.?
NO -
Go to step 27.
27. Turn the ignition switch to LOCK (0).
28. Remove the rear blower motor relay from the dashboard wire harness, 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 rear blower motor relay.?
29. Measure the voltage between rear blower motor relay 4P socket terminal No. 1 and body ground.
Is there battery voltage?
