FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Acura >> 2009 >> TL AWD V6-3.7L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Cooling System >> Testing and Inspection >> Component Tests and General Diagnostics >> A/C Condenser Fan High Speed Circuit Troubleshooting

A/C Condenser Fan High Speed Circuit Troubleshooting




A/C Condenser Fan High Speed Circuit Troubleshooting

NOTE:

- Do not use this troubleshooting procedure if the A/C compressor is inoperative. Refer to the symptom troubleshooting index.

- Before doing any symptom troubleshooting, check for powertrain DTCs. Initial Inspection and Diagnostic Overview

1. Check the No. 3-3 (SUB FAN MTR) (30 A: without SH-AWD) or No. 3-2 (SUB FAN MTR) (40 A: with SH-AWD) fuse in the under-hood fuse/relay, and the No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Are the fuses OK?
YES - Go to step 2.

NO - Replace the fuse(s), and recheck. If fuse(s) blow again, check for a short in the No. 3-3 (SUB FAN MTR) (30 A: without SH-AWD) or No. 3-2 (SUB FAN MTR) (40 A: with SH-AWD) fuse, or No. 16 (7.5 A) fuse circuits.


2. Jump the SCS line with the HDS.
NOTE: This step must be done to protect the powertrain control module (PCM) from damage.

3. Disconnect PCM connector A (49P).

4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

5. Measure the voltage between PCM connector A terminal No. 5 and body ground.

Is there battery voltage?
YES - Go to step 6.

NO - Repair open in the wire between the under-hood fuse/relay box and the PCM. If the wire is OK, replace the under-hood fuse/relay box. Under-Hood Fuse/Relay Box Removal and Installation






6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

7. Connect the PCM connector A (49P) terminal No. 5 to body ground with a jumper wire.






8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

Does the A/C condenser fan run on high?
YES - Check for loose wires or poor connections at PCM connector A (49P) terminal No. 5. If the connections are good, substitute a known-good PCM, and recheck. If the symptom/indication goes away, replace the original PCM. PCM Replacement

NO - Replace the under-hood fuse/relay box. Under-Hood Fuse/Relay Box Removal and Installation


pro multis Credits:Operation CHARM About Operation CHARM