H: Coolant Temperature Gage Is Not Accurate

Disconnect the Coolant Temperature Sender. Connect the two red leads of the J33431 Instrument Panel Tester to the DK GRN (35) wire and to ground. Put the Ignition Switch in RUN. Adjust the tester dials to 55 ohms 260°F (125°C) and then to 1365 ohms 100°F (90°C). Observe the Gage in each position.

^ If the Gage reads correctly, replace the coolant temperature sender.

^ If the Gage does not read correctly, check the DK GRN and DK GRN/WHT (35) wires for high resistance. Check Gage connections. If OK, replace the Instrument Cluster (see Service and Repair).