637 FMI 11
UnclassifiedFuel
What This Code Means
Stop Lamp power stage electric failure; Warning Lamp power stage electric failure; Injector will not be corrected; Fault code stored in EEPROM; Incorrect engine angle and speed determination; Poor speed sensor signal quality; Speed sensor signal plausibility failure; Loss of torque/speed demand signal transmission from Vehicle Controller to EDC; Triggering of substitute reaction in diagnostic system; Injector hardware failure detected; ECM power stage failure detected
Possible Causes
- •Electric failures in the power stage of the Stop Lamp detected by hardware monitoring
- •Electric failures in the power stage of the Warning Lamp detected by hardware monitoring
- •Injector correction values read from the EEPROM are not plausible
- •EEPROM checksums are incorrect
- •Plausibility issues between camshaft and crankshaft speed sensor signals
- •Active timeout (TSC1 CAN messages not sent at fast rate when request is active)
- •Passive timeout (TSC1 CAN messages not sent at slow rate when no request is active)
- •Overcurrent in the injectors or ECM power stages
- •Command collision
- •RAM error
- •Short circuit
- •Measured pattern matches the reference pattern of expected combination of errors
Suggested Actions
- 1Correct injector values at the end of production line (EOL)
- 2Perform injector correction with the tester after substitution of the injectors
Related Winco Fault Codes
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