B2300 L4-2.3L VIN D (2004)
Temperature Gauge: Testing and Inspection
Magnetic Gauge Test
Fuel Thermometer SST49 0839 285 is used to diagnose concerns with the instrument cluster magnetic gauges.
To test the magnetic gauges:
1. Disconnect the connector from the appropriate sender and connect the signal wire to the Fuel Thermometer SST 49 0839 285.
2. Turn the ignition lock cylinder to the ON position.
Engine Coolant Temperature Gauge Test
1. Disconnect ECT sender connector. Connect one lead of Fuel Thermometer SST 49 0839 285 to the sender connector (R/W) and the other lead to
ground.
2. Set Fuel Thermometer SST 49 0839 285 to 300 ohms. Key ON. Wait one minute. The engine coolant temperature gauge should indicate C
(cold). Key OFF.
3. Set Fuel Thermometer SST 49 0839 285 to 45 ohms. Key ON. Wait one minute. The engine coolant temperature gauge pointer should be in the
one quarter range to mid range. Key OFF.
4. Set Fuel Thermometer SST 49 0839 285 to 18 ohms. Key ON. Wait one minute. The engine coolant temperature gauge should indicate H (hot).
Key OFF. Return to INSTRUMENT CLUSTER PINPOINT TEST 2: INCORRECT TEMPERATURE GAUGE INDICATION. See: Instrument
Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Testing and Inspection/Pinpoint Tests/Instrument Cluster/Pinpoint Test 2
