Radiator and A/C Condenser Fan Low Speed Circuit Troubleshooting

  1. Measure the voltage between ECM connector A (44P) terminal No. 4 and body ground.
Is there battery voltage?
YES -
Go to Step 19 .
NO -
Repair open in the wires between the under-hood fuse/relay box and the ECM, or between the No. 36 (10 A) fuse in under-dash fuse/relay box and the under-hood fuse/relay box. If wires are OK, replace the under-hood fuse/relay box. ■
  1. Turn the ignition switch to LOCK (0).