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COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR TSB Revision CHASSIS ELECTRICAL 54A-61 STEP 5. Check the engine coolant temperature gauge unit. Maintenance Service − Engine Coolant (2) Remove the engine coolant temperature gauge unit. ° C (150° F) water to measure the resistance. Q: Is the resistance 104 ±±±± 13.5 ohms? YES : Repair or replace the combination meter (printed- circuit board or engine coolant temperature gauge NO : Replace the engine coolant temperature gauge unit. The engine coolant temperature gauge should work SPECIAL TOOLS M1543000600284 ACX01789 AB TOOL TOOL NUMBER SUPERSESSION APPLICATION MB991502 Scan tool MB991496-OD Reading MFI system MB991223 adapter D:Probe MB991223 Making voltage and A:Connect pin contact pressure inspection B:Power circuit inspection C:Power circuit inspection D:Commercial tester connection B991502 MB991223 A B C D AC |