DTC 633
UnclassifiedFuel
What This Code Means
TPS 2 Signal Voltage High; DST displays TPS 2 voltage of 4.8 volts or greater with throttle closed; TPS 2 voltage exceeds 4.8 volts
Possible Causes
- •Voltage short in electronic throttle connector TPS 2 signal circuit (pin 5)
- •Open or broken continuity between throttle connector sensor ground pin 2 and ECM connector sensor ground pin 49
- •Damaged, corroded, or contaminated electronic throttle wire harness connector and terminals
- •Faulty electronic throttle
- •Faulty ECM
- •Intermittent problem
Suggested Actions
- 1Perform On-Board (OBD) System Check
- 2Repair circuit as necessary (refer to Wiring Repairs in Engine Electrical)
- 3Inspect the electronic throttle wire harness connector and terminals for damage, corrosion, or contamination
- 4Replace electronic throttle
- 5Replace ECM
- 6Refer to Intermittent section
Related Power Solutions, Inc. Fault Codes
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