Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Allow the engine to cool to room temperature. With the ignition ON, does the temperature gage always read at the high end of the scale? | -- | Go to Step 2 | Go to Step 7 | |
2 | Disconnect the coolant temperature sensor electrical connector. Does the temperature gage indicator drop to the low end of the scale? | -- | Go to Step 3 | Go to Step 4 |
3 | Replace the coolant temperature gage sensor. Refer to Engine Coolant Temperature Sensor Replacement . Is the repair complete? | -- | System OK | -- |
4 | Inspect for a short to ground between the coolant temperature sensor and the temperature gage. | -- | Go to Step 5 | Go to Step 6 |
5 | Repair the short to ground. Is the repair complete? | -- | System OK | -- |
6 | Replace the instrument cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | System OK | -- |
7 |
Is the voltage within the specified range? | 11-14 V | Go to Step 10 | Go to Step 8 |
8 | Inspect for an open circuit between the coolant temperature sensor and the temperature gage. Is there an open circuit? | -- | Go to Step 9 | Go to Step 6 |
9 | Repair the open circuit between the coolant temperature sensor and the temperature gage. Is the repair complete? | -- | System OK | -- |
10 |
Does the temperature gage move to the high end of the scale? | -- | Go to Step 3 | Go to Step 6 |
