Signal Too High
Signal too high
Checking the transmission output speed sensor signal
- Ignition off
- Raise the car so that the drive wheels are clear of the ground
- Start the engine and let it run at idle speed
- Shift gear selector to position D so that the drive wheels begin to rotate
- Read off the transmission speed.
Depress the accelerator pedal (AP) and check that the speed is updated.
Note! Ensure that the wheels are not rotating when the gear selector is moved.
Note! Diagnostic trouble codes (DTCs) may be stored in the ABS system when the rear wheels are stationary and the front wheels rotate. Erase any diagnostic trouble codes (DTCs) stored in the ABS system after fault-tracing.
Was the speed updated?
Yes - Intermittent fault
No - Checking wiring and sensors
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Checking wiring and sensors
- Ignition off
- Connect the breakout box.
Check the wiring between control module terminals #9 and #10 and terminals #1 and #2 on the white 2-pin transmission connector. Check for a short-circuit to each other.
Check the power supply cable between control module terminal #9 and terminal #2 on the white 2-pin transmission connector. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the signal cable between control module terminal #10 and terminal #1 on the white 2-pin transmission connector (control module side). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box, AW55-50/51SN Connecting The Breakout Box
- To disconnect the control module, see Replacing the transmission control module (TCM), AW55-50/51SN Service and Repair
- To disconnect the transmission connectors, see Transmission connectors, AW55-50/51SN Transmission Connectors
- To check or replace the transmission output speed sensor, see Replacing the speed sensor, AW55-50/51SN Removal and Replacement
- For information about signals, see Signal description. Transmission control module (TCM), AW55-50/51SN Signal Description.
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 are clear of the ground
- Start the engine and let it run at idle speed
- 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 ABS system when the rear wheels are stationary and the front wheels rotate. Erase any diagnostic trouble codes (DTCs) stored in the ABS system 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 FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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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 - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the transmission output speed sensor signal
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Intermittent fault
- Ignition off.
Check the control module and transmission connectors. Check for contact resistance and oxidation and remedy according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the power supply cable between control module terminal #9 and terminal #2 on the white 2-pin transmission connector. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the signal cable between control module terminal #10 and terminal #1 on the white 2-pin transmission connector. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box, AW55-50/51SN Connecting The Breakout Box
- To disconnect the control module, see Replacing the transmission control module (TCM), AW55-50/51SN Service and Repair
- To disconnect the transmission connectors, see Transmission connectors, AW55-50/51SN Transmission Connectors
- For information about signals, see Signal description. Transmission control module (TCM), AW55-50/51SN Signal Description.
Continue - Diagnostic trouble code (DTC) information
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Diagnostic trouble code (DTC) information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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Attempt New Test - Checking the transmission output speed sensor signal
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