( SMR7E50G10100012033FAAT00 )

A/C Condenser Fan High Speed Circuit Troubleshooting

NOTE:

Do not use this troubleshooting procedure if the radiator fan and/or the A/C compressor is inoperative. Refer to the symptom troubleshooting index.
Before doing any symptom troubleshooting, check for powertrain DTCs.

Remove the fan control relay from the under-hood fuse/relay box, and test it.

Is the relay OK?

YES	-	Go to Step 2 .
NO	-	Replace the fan control relay .■

Turn the ignition switch ON (II).

Measure the voltage between the fan control relay 5P socket terminal No. 5 and body ground.

Is there battery voltage?

YES	-	Go to Step 4 .
NO	-	Replace the under-hood fuse/relay box. ■

Turn the ignition switch OFF.

Check for continuity between the fan control relay 5P socket terminal No. 2 and body ground.

Is there continuity?

YES	-	Go to Step 6 .
NO	-	Check for an open in the wire between the fan control relay and body ground. If the wire is OK, check for poor ground at G301. ■

Jump the SCS line with the HDS.

NOTE: This step must be done to protect the engine control module (ECM) from damage.

Disconnect ECM connector No. 2 (58P).

Check for continuity between the fan control relay 5P socket terminal No. 3 and ECM connector No. 2 (58 P) terminal No. 54.

Is there continuity?

YES	-	Check for loose wires or poor connections at ECM connector No. 2 (58 P). If the connections are good, substitute a known-good ECM, and recheck. If the symptom/indication goes away, replace the original ECM. ■
NO	-	Repair open in the wire between the fan control relay and the ECM.■