Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM2000PICKUP R1500, 4D PICKUP EXTRA CAB, 5.2 Y, RWD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULESSYSTEM TESTSCHIME SYSTEMCHIME INOPERATIVE WITH EXTREME COOLANT TEMPERATURE
2000 Dodge and Ram Pickup R1500, 4D Pickup Extra Cab, 5.2 Y, RWD, Automatic
Chime Inoperative With Extreme Coolant Temperature
2000 Dodge and Ram Pickup R1500, 4D Pickup Extra Cab, 5.2 Y, RWD, AutomaticSECTION Chime Inoperative With Extreme Coolant Temperature
- Turn ignition on. Using scan tool, read Powertrain Control Module (PCM) DTCs. If no engine coolant temperature related codes exist, go to next step. If engine coolant temperature related codes exist, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
- Using scan tool, actuate chime. If chime sounds, go to next step. If chime does not sound, replace Central Timer Module (CTM). CTM is located to right side of steering column, behind knee bolster.
- Due to difficult access of coolant temperature sensor, Oil Pressure Switch (OPS) will be used to verify CCD bus message from PCM. Disconnect OPS connector. OPS is located near bottom of distributor. Connect a jumper wire between OPS connector terminals. Start engine and allow to idle for 20 seconds. Increase engine speed to 1600 RPM. If chime sounds, system is currently functioning properly. If chime does not sound, go to next step.
- Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Disconnect Gray 10-pin instrument cluster harness connector C2. Connect a jumper wire between ground and harness connector C2 terminal No. 7 (Dark Blue/Red wire). Turn ignition on. If chime sounds, replace instrument cluster. See ANALOG INSTRUMENT PANELS - RAM PICKUP article. If chime does not sound, repair open Dark Blue/Red wire.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.