Hi ponja,
He are the description of the problem.
P1550 , P1551, P1633/ECM -510F: VEHICLE SPEED SIGNAL
Fault Conditions
ECM- 510F is stored when an error message is sent to ECM if a fault in vehicle speed signal has been detected in ABS control module.
(DTC ECM- 510F (no signal) is stored if there is no communication between the ABS/brake control module (BCM) and the ECM or if the communication is distorted. An error message is sent to the ECM and DTC ECM- 510F (signal too high/too low) is stored in the engine control module (ECM). DTCs for the Vehicle Speed Sensor (VSS) signal are stored in the ABS/brake control module (BCM).
No substitute value is used. Misfire diagnostics is switched off while ECM- 510F is set.
MIL is illuminated while ECM- 510F is set.
Possible Causes (Signal High Or Signal Low)
Vehicle speed sensor signal from ABS control module is faulty or missing. Defective vehicle speed signal to the ABS /brake control module (BCM). A DTC is stored in the ABS /brake control module (BCM).
Possible Causes (Signal Missing)
• Contact resistance in the Controller area network (CAN) terminals
• Open circuit in one or both CAN cables
• One or both signal cables short-circuited to ground, voltage or each other
• Defective ABS /brake control module (BCM)
• Defective engine control module (ECM)
Diagnostic Procedure
For wheel speed (vehicle speed) sensor diagnosis, see appropriate ANTI-LOCK, WITHOUT TRACTION CONTROL article in BRAKES.
© 2008 Mitchell Repair Information Co., LLC.
Nov 27, 2009 at 2:55 AM
