Faulty Signal
Faulty signal
Checking gear-shift position sensor
- Ignition on.
- Read off gear-shift position sensor position.
Move the gear selector to all shift positions a number of times, and repeatedly select the same position to check the operation of the gear-shift position sensor.
Are all values OK?
Yes - Intermittent fault
No - Checking gear-shift position sensor adjustment
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Checking gear-shift position sensor adjustment
- Ignition off.
Check that gear-shift position sensor is correctly adjusted according to Checking/adjusting gear-shift position sensor .
Adjust gear-shift position sensor if necessary according to Checking/adjusting gear-shift position sensor .
Was the gear-shift position sensor correctly adjusted?
Yes - Checking cables
No - Verification
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Checking cables
- Ignition off.
- Disconnect the transmission connector.
- Connect breakout box.
Check wiring between transmission connector (control module side):
- #1A and control module #A46 "A"
- #2A and control module #A64 (#B4) "B"
- #3A and control module #A45 "C"
- #4A and control module #A63 (#B3) "PA"
for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Other information:
- To connect the breakout box, see Connecting breakout box, Transmission control module (TCM) Connecting Breakout Box, Transmission Control Module (TCM).
- For information about signals, see Signal specification, Transmission control module (TCM) Signal Description AW50-42.
Was a fault detected? Select alternative as follows:
1. No fault detected.
2. Open-circuit in wiring or short-circuit to ground.
3. Wiring short-circuited to voltage.
1 - Replacing component
2 - Verification
3 - Checking gear-shift position sensor
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Replacing component
Try a new gear-shift position sensor according to Checking/adjusting gear-shift position sensor .
Continue - Verification
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Checking gear-shift position sensor
Hint: The gear-shift position sensor can malfunction if the signal cable has been short-circuited to supply voltage. Check the gear-shift position sensor as follows:
- Ignition off.
- Transmission connector connected.
- Control module connected.
- Ignition on.
- Read off gear-shift position sensor position.
Move the gear selector to all shift positions a number of times, and repeatedly select the same position to check the operation of the gear-shift position sensor. If the gear-shift position sensor function is OK the cause of the fault was contact resistance and oxidation.
Are all positions OK?
Yes - FAULT FOUND
No - Replacing component
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Verification
Verification
Hint: After carrying out the repair check that the fault has been remedied.
- Ignition off.
- Reconnect components, connectors etc.
- Ignition on.
- Read off gear-shift position sensor position.
Move the gear selector to all shift positions a number of times, and repeatedly select the same position to check the operation of the gear-shift position sensor.
Are all values OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - FAULT FOUND
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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 gear-shift position sensor
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Intermittent fault
- Ignition off.
Check that the gear-shift position sensor is securely mounted.
Check control module and transmission connectors and gear-shift position sensor ground terminal for intermittent loose connections (terminals) according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check cables between the gear-shift position sensor and transmission control module (TCM) for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and 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 disconnect control module, see Replacing the gearbox control module (TCM) .
- To disconnect transmission connector, see Inspecting/cable harness to solenoids .
- For information about signals, see Signal specification, Transmission control module (TCM) Signal Description AW50-42.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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Attempt New Test - Checking gear-shift position sensor
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