Chassis Number 26213 - 999999

Signal missing. Permanent fault

Checking the transmission input speed sensor signal




- Gear selector in position P
- Start the engine and let it run at idle speed
- Read off the transmission input speed.
Check that the transmission speed is updated.
Compare with the engine speed (RPM).





Is the speed updated?

Yes - No Fault Found

No - Checking wiring and sensors

-------------------------------------------------

Checking wiring and sensors




- Ignition off.
Check the transmission connector. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the power supply cable between transmission control module (TCM) terminal #A59 (#A59) and transmission connector terminal #A2. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the signal cable between transmission control module (TCM) terminal #A41 (#A41) and transmission connector terminal #A1. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Hint: With the control module connected, the ignition on and a voltmeter connected between transmission connector terminals #A2 and #A1 (control module side), the voltage must be 1-3 V below Ubat.

Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- To disconnect the transmission control module (TCM), see Transmission control module (TCM), replacing, B5244T5, AW55-50/51SN, B5254T2, AW55-50/51SN, B5254T2, AW50/51 AWD Service and Repair
- To disconnect the transmission connectors, see Connectors, transmission, disconnecting / connecting, B5244T5, AW55-50/51SN, B5254T2, AW55-50/51SN, B5254T2, AW50/51 AWD Procedures
- To replace the transmission input speed sensor, see Replacing the transmission input speed sensor and the transmission output speed sensor Input Speed Sensor/Output Speed Sensor, Replacing
- For information about signals, see Signal description. Transmission control module (TCM), AW50/51 AWD, AW55-50/51SN Signal Description. Transmission Control Module (TCM).









Select Continue

Continue - Verification

-------------------------------------------------

Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off.
- Reinstall the connectors, components etc.
- Start the engine and let it idle.
- Gear selector in position P.
- Read off the transmission speed.
Depress the accelerator pedal (AP) and check that engine speed (RPM) is updated.
Compare with the engine speed (RPM).





Is the speed updated?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

------------------------

VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

PAPER - No Fault Found

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

------------------------

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the transmission input speed sensor signal

-------------------------------------------------