Coolant Temperature Gauge Troubleshooting

Before testing, check the No. 6 (7.5 A) fuse and No. 18 (7.5 A) fuse in the under-dash fuse/relay box.

1. Start the engine and check the Malfunction Indicator Lamp (MIL).
   1. Does the MIL come on? 
      1. YES:  Troubleshooting the DTC (see DTC TROUBLESHOOTING ), and recheck.
      2. NO:  Inspect the connector and socket terminals of the gauge assembly connectors. If the terminals look OK, replace the printed circuit board in the gauge assembly.