DEFINITION: The low engine coolant indicator lamp does not come on with a low engine coolant level or for bulb check.

Did you review the engine coolant level sensor operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

Does the low engine coolant indicator lamp come on for bulb check or with a low engine coolant level?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Disconnect the low engine coolant level indicator module.
2. Turn the ignition switch to RUN.
3. Connect a J 35616-200 unpowered test lamp between low engine coolant level indicator module connector cavity A for CKT 39 (PNK) and ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp light?

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Go to Step 4

Go to Step 9

Connect a J 39200 DMM between low engine coolant level indicator module connector cavity C for CKT 150 (BLK) and ground. Refer to Circuit Testing in Wiring Systems.

Is continuity present?

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Go to Step 5

Go to Step 10

Connect a J 36169-A fused jumper wire between low engine coolant level indicator module connector cavity E for CKT 68 (YEL/BLK) and ground. Refer to Circuit Testing in Wiring Systems.

Does the low coolant indicator lamp light?

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Go to Step 7

Go to Step 6

1. Disconnect the instrument cluster.
2. Connect a J 39200 DMM between instrument cluster connector cavity A5 and low engine coolant level indicator module connector cavity E for CKT 68 (YEL/BLK). Refer to Circuit Testing in Wiring Systems.

Is continuity present?

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Go to Step 13

Go to Step 11

1. Verify that the radiator is full.
2. Connect a J 39200 DMM between low engine coolant level indicator module connector cavity F for CKT 1478 (LT GRN) and ground. Refer to Circuit Testing in Wiring Systems.

Is the resistance less than the specified value?

12 Kohms

Go to Step 8

Go to Step 14

1. Disconnect the low engine coolant level indicator sensor.
2. Connect a J 39200 DMM between low engine coolant level indicator sensor connector cavity A for CKT 1478 (LT GRN) and ground. Refer to Circuit Testing in Wiring Systems.

Is continuity present?

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Go to Step 12

Go to Step 15

Repair the open in CKT 39 (PNK) between splice S216 and the low engine coolant level indicator module. Refer to Wiring Repairs in Wiring Systems.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Repair the open in CKT 150 (BLK) between the low engine coolant level indicator module and ground G201. Refer to Wiring Repairs in Wiring Systems.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Repair the open in CKT 68 (YEL/BLK) between the instrument cluster and the low engine coolant level indicator module. Refer to Wiring Repairs in Wiring Systems.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Repair the short to ground in CKT 1478 (LT GRN) between the low engine coolant level indicator module and the low engine coolant level indicator sensor. Refer to Wiring Repairs in Wiring Systems.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Replace the instrument cluster. Refer to Instrument Cluster Replacement in IP Gauges and Console.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Replace the low engine coolant level indicator module. Refer to Engine Coolant Level Indicator Module Replacement in IP Gauges and Console.

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Replace the low engine coolant level indicator sensor. Refer to Coolant Recovery Reservoir Replacement .

Is the low engine coolant indicator operative?

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Go to Step 16

Go to Step 3

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3