TL V6-3.2L (2004)
10. Measure the voltage between the No.14 terminal of climate control unit connector A (20P) and body ground.
Is there 5 V or more?
YES - Go to step 11.
NO - Repair the open in the wire between the climate control unit and the A/C pressure switch.
11. Turn the ignition switch OFF.
12. Measure the evaporator sensor resistance between the No.5 and No.18 terminals of climate control unit connector A (20P).
Is the resistance less than 24 KOhms?
YES - Go to step 13.
NO - Repair cause of high resistance in the evaporator temperature circuit.
13. Reconnect climate control unit connector A (20P).
14. Turn the ignition switch ON (II).
15. Check that blower motor operates at all speeds.
Does the blower motor operate at all speeds?
YES - Check for loose wires or poor connections at climate control unit connector A (20P) and at the A/C pressure switch 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.
NO - Repair the problem in the blower motor circuit.
16. Check for proper A/C system pressure.
Is the pressure within specifications
YES - Replace the A/C pressure switch.
NO - Repair the A/C pressure problem.
