1. Turn the ignition switch to the RUN position.
2. Disconnect the engine coolant temperature (ECT) sensor pigtail.
3. Connect a fused jumper from the engine coolant temperature sensor pigtail connector, cavity C to ground. Refer to Using Fused Jumper Wires in Wiring Systems.

Does the temperature gauge indicate HOT?

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Go to Step 2

Go to Step 3

Replace the ECT sensor. Refer to Engine Coolant Temperature Sensor Replacement in Engine Controls.

Is the repair complete?

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System OK

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1. Remove the fused jumper from the ECT pigtail connector.
2. Backprobe the instrument cluster connector with a fused jumper from cavity 13 to ground.

Does the temperature gauge indicate HOT?

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Go to Step 4

Go to Step 5

Locate and repair the open in CKT 35 (DK GRN) between the instrument cluster connector, cavity 13 and the ECT sensor pigtail connector.

Is the repair complete?

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System OK

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Replace the instrument cluster.

Is the repair complete?

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System OK

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