Signal Missing
Signal missing
Checking wiring and sensors
Check connector B (4-pin) for the transmission control module (TCM). Check for contact resistance. Check for oxidation.
Check the power supply cable between transmission control module (TCM) terminal #B2 (#A52) and the speed sensor. Check for an open-circuit. Check for a short-circuit to ground.
Check the signal cable between transmission control module (TCM) terminal #B1 (#A51) and the speed sensor. Check for an open-circuit. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- Connecting the breakout box, AW55-50/51SN Connecting Breakout Box, Transmission Control Module (TCM)
- Transmission control module (TCM) Service and Repair
- Signal specification, AW55-50/51SN Signal Specification, Transmission Control Module (TCM)
- Checking wiring and terminals Checking Wiring and Terminals
Transmission Output Speed Sensor:
Continue - Verification
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Raise the car so that the drive wheels can rotate freely
- Start the engine. Allow the engine to idle
- Shift gear selector to position D so that the drive wheels begin to rotate
- Read off the transmission speed.
Check that the speed is updated.
Note! Diagnostic trouble codes (DTCs) may be stored in the brake control module (BCM) when the rear wheels are stationary and the front wheels rotate. Erase any diagnostic trouble codes (DTCs) after fault-tracing.
Note! Ensure that the wheels are not rotating when the gear selector is moved.
Was the speed updated?
Yes - VERIFIED
No - VERIFICATION FAILEDPAPER
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Attempt New Test - Checking wiring and sensors
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