For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Instrument Cluster Diagnostic System Check? | -- | Go to Step 2 | Go to Instrument Cluster System Check
2 |

1. Disconnect the engine coolant temperature (ECT) sensor connector.
2. Connect a fused jumper from the ECT sensor connector cavity 2 to ground.
3. Turn the ignition switch to the ON position.

Does the ECT gauge indicate H?

--

Go to Step 3

Go to Step 5

3 | Inspect for a poor connection at the ECT sensor. Is the connection OK? | -- | Go to Step 4 | Go to Step 9
4 | Replace the ECT sending unit. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
5 |

1. Disconnect the fused jumper from the ECT sensor connector.
2. Disconnect the IP cluster assembly connector C1.
3. Connect the J 39200 DMM from the IP cluster assembly connector C1 terminal 6 to the sensor connector cavity 2.
4. Measure the resistance.

Is the resistance greater than the specified value?

2.0 ohms

Go to Step 6

Go to Step 7

6 | Repair the open in the YEL/WHT wire between the IP cluster assembly and the ECT sensor. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
7 | Inspect the IP cluster printed circuit for the following conditions:

• | Cracks

• | Bad connections

Do the above conditions exist?

--

Go to Step 10

Go to Step 8

8 | Replace the ECT gauge. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
9 | Repair the faulty connection. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
10 | Replace the instrument panel cluster assembly. Refer to Printed Instrument Cluster Circuit Replacement in Instrument Panel, Gauges, and Console. Is the repair complete? | -- | Go to Instrument Cluster System Check | --