INSPECTION PROCEDURE 4: Engine Coolant Temperature Gauge does not Work.: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tool:

MB991223: Harness Set

STEP 1. Check he engine coolant temperature gauge by observing the other meter.
Check to see that the speedometer, tachometer and fuel gauge operate normally.

Q: Do all other meters operate?

YES < other meters all operate > : Go to Step 2.

NO < one of the meters do not operate > : Refer to INSPECTION PROCEDURE 5 .
STEP 2. Check the engine coolant temperature gauge unit.
Check to see that the engine coolant temperature gauge unit operates normally. Refer to ENGINE COOLANT TEMPERATURE GAUGE UNIT CHECK .

Q: Is the engine coolant temperature gauge unit normal?

YES : Go to Step 3.

NO: Replace the engine coolant temperature gauge unit. The engine coolant temperature gauge should work normally.
STEP 3. Check engine coolant temperature gauge unit connector B-08 and combination meter connector C-102 for damage.
Q: Are engine coolant temperature gauge unit connector B-08 and combination meter connector C-102 in good condition?

YES : Go to Step 4.

NO: Repair or replace the connector(s). Refer to , HARNESS CONNECTOR INSPECTION . The engine coolant temperature gauge should work normally.

Fig 1: Checking Engine Coolant Temperature Gauge Unit Connector B-08
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 2: Checking Engine Coolant Temperature Gauge Unit Connector B-08
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 3: Checking Combination Meter Connector C-102
Courtesy of DAIMLERCHRYSLER CORPORATION
STEP 4. Check the wiring harnesses between engine coolant temperature gauge unit connector B-08 (terminal 1) and combination meter connector C-102 (terminal 42).

Fig 4: Checking Engine Coolant Temperature Gauge Unit Connector B-08
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 5: Checking Engine Coolant Temperature Gauge Unit Connector B-08
Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 6: Checking Combination Meter Connector C-102
Courtesy of DAIMLERCHRYSLER CORPORATION

NOTE: Also check intermediate connector C-25. If intermediate connector C-25 is damaged, repair or replace the connector as described in Refer to , HARNESS CONNECTOR INSPECTION .

Q: Are the wiring harnesses between engine coolant temperature gauge unit connector B-08 (terminal 1) and combination meter connector C-102 (terminal 42) in good condition?

YES : Repair or replace the combination meter. The engine coolant temperature gauge should work normally.

NO: Repair the wiring harness(es). The engine coolant temperature gauge should work normally.

Fig 7: Checking Intermediate Connectors C-25

Courtesy of DAIMLERCHRYSLER CORPORATION