Faulty Signal
Faulty signal
Checking the gear-shift position sensor
- Ignition on
- Go into scrolling values
- Read off the position of the gear-shift position sensor.
Move the gear selector to all shift positions a number of times. Repeatedly select the same position to check the operation of the gear-shift position sensor.
Are these values OK?
Yes - Intermittent fault
No - Checking the adjustment of the gear-shift position sensor
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Checking the adjustment of the gear-shift position sensor
Check that gear-shift position sensor is correctly adjusted according to Checking and adjusting the gear-shift position sensor Adjustments.
Adjust if necessary.
Is the gear position sensor correctly adjusted?
Yes - Connecting the breakout box
Connecting the breakout box
No - Verification
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Connecting the breakout box
Connecting the breakout box
951 1355 Adapter 42-pin 951 1355 Adapter 42-pin 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Information
Connecting the breakout box to AW50-42
Is the breakout box connected to the control module?
Yes - CONNECTEDReturn to fault-tracing.
No - NOT CONNECTED
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CONNECTED - CONNECTED
NOT CONNECTED - Connecting the breakout box
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Connecting the breakout box
Connecting the breakout box
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 951 1355 Adapter 42-pin 951 1355 Adapter 42-pin
Connecting the breakout box
Caution! The voltage supply to the control module must be disconnected when disconnecting the breakout box. Failure to observe this procedure could seriously damage the control module.
- Ignition off
- Expose and disconnect the AW50-42 transmission control module (TCM) according to Replacing the transmission control module (TCM) .
- Control module disconnected.
Connect adapter 951 1355 Adapter 42-pin 951 1355 Adapter 42-pin to the control module connector (wiring side). Connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to the adapter.
Note! Ensure that the adapter is the right way around.
Continue - DONE
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DONE - Checking the ground terminal
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Checking the ground terminal
- Ignition off.
- Control module disconnected.
- Switch off all power consuming equipment, such as courtesy lighting, radio etc.
Connect an ohmmeter between terminal 1 on the breakout box and the battery negative terminal.
The ohmmeter should read approximately 0 ohms.
OK - Return to the fault-tracing procedure where it was interrupted.
No Fault Found
Not OK - Checking for an open-circuit, contact resistance and oxidation
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Checking for an open-circuit, contact resistance and oxidation
Check ground terminal 31/20 and the lead between the ground terminal and control module #1 for open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the ground lead between the battery and the body for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Verification
Verification
Hint: After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:
- Ignition off
- Switch off all power consuming equipment, such as courtesy lighting, radio etc.
- Control module disconnected
Connect an ohmmeter between #1 on the breakout box and the battery negative terminal.
The ohmmeter should read approximately 0 ohms.
OK - VERIFIED
Not OK - 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 be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.
Complete the fault-tracing for those fault or try again.
Do you want to terminate fault-tracing at this time?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Connecting the breakout box
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CONNECTED - Checking the ground terminal for the gear-shift position sensor
FAULT FOUND - Checking the ground terminal for the gear-shift position sensor
FAULT-TRACING FAILED - Checking the ground terminal for the gear-shift position sensor
No Fault Found - Checking the ground terminal for the gear-shift position sensor
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Checking the ground terminal for the gear-shift position sensor
Note! The gear-shift position sensor / transmission is grounded via the ground terminal for the control module.
- Ignition off.
Connect an ohmmeter between the gear-shift position sensor housing and breakout box terminal #1.
The ohmmeter shall show approx. 0 ohms.
Does the ohmeter read approx. 0 ohms?
Yes - Checking the signal cable resistance to ground
No - Remedying the ground terminal for the gear-shift position sensor
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Remedying the ground terminal for the gear-shift position sensor
Check the cable between the gear-shift position sensor / transmission and control module terminal #1 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Checking the signal cable resistance to ground
- Ignition off
- Disconnect the 10-pin transmission connector. For information about the connectors, see Transmission connectors Transmission Connectors
- Breakout box connected
- Transmission control module (TCM) disconnected.
Connect an ohmmeter between:
- Fenix 5.1:
- breakout box terminal #1 and terminal #27 "A"
- breakout box terminal #1 and terminal #41 "B"
- breakout box terminal #1 and terminal #26 "C"
- breakout box terminal #1 and terminal #13 "PA".
- EMS 2000:
- breakout box terminal #1 and terminal #23 "A"
- breakout box terminal #1 and terminal #37 "B"
- breakout box terminal #1 and terminal #9 "C"
- breakout box terminal #1 and terminal #22 "PA".
The ohmmeter should read infinite resistance.
Is the value OK?
Yes - Checking the resistance of the signal cable
No - Checking for a short-circuit to ground
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Checking for a short-circuit to ground
Check the cable between transmission connector (control module side):
- Fenix 5.1:
- terminal #6 and control module terminal #27 "A"
- terminal #5 and control module terminal #41 "B"
- terminal #8 and control module terminal #26 "C"
- terminal #7 and control module terminal #13 "PA".
- EMS 2000:
- terminal #5 and control module terminal #23 "A"
- terminal #6 and control module terminal #37 "B"
- terminal #3 and control module terminal #9 "C"
- terminal #4 and control module terminal #22 "PA".
for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Checking the resistance of the signal cable
- Ignition off
- 10-pin transmission connector disconnected.
Connect a an ohmmeter between the 10-pin transmission connector (control module side):
- Fenix 5.1:
- terminal #6 and control module terminal #27 "A"
- terminal #5 and control module terminal #41 "B"
- terminal #8 and control module terminal #26 "C"
- terminal #7 and control module terminal #13 "PA".
- EMS 2000:
- terminal #5 and breakout box terminal #23 "A"
- terminal #6 and breakout box terminal #37 "B"
- terminal #3 and breakout box terminal #9 "C"
- terminal #4 and breakout box terminal #22 "PA".
The ohmmeter should show approx. 0 ohms for all measurements.
Are these values OK?
Yes - Checking the signal cable for a short-circuit to supply voltage
No - Checking for an open-circuit
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Checking for an open-circuit
Check the cable between transmission connector:
- Fenix 5.1:
- terminal #6 and control module terminal #27 "A"
- terminal #5 and control module terminal #41 "B"
- terminal #8 and control module terminal #26 "C"
- terminal #7 and control module terminal #13 "PA".
- EMS 2000:
- terminal #5 and control module terminal #23 "A"
- terminal #6 and control module terminal #37 "B"
- terminal #3 and control module terminal #9 "C"
- terminal #4 and control module terminal #22 "PA".
Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Checking the signal cable for a short-circuit to supply voltage
- Ignition off
- Connect the control module.
- Ignition on.
Connect a electricians screwdriver with a bulb (3 W minimum) between:
- Fenix 5.1:
- breakout box terminals #1 and #27 "A"
- breakout box terminals #1 and #41 "B"
- breakout box terminals #1 and #26 "C"
- breakout box terminals #1 and #13 "PA".
- EMS 2000:
- breakout box terminal #1 and terminal #23 "A"
- breakout box terminal #1 and terminal #37 "B"
- breakout box terminal #1 and terminal #9 "C"
- breakout box terminal #1 and terminal #22 "PA".
Is the test light activated?
Yes - Checking for a short-circuit to supply voltage
No - Checking the function of the gear-shift position sensor
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Checking for a short-circuit to supply voltage
Check the cable between transmission connector:
- Fenix 5.1:
- terminal #6 and control module terminal #27 "A"
- terminal #5 and control module terminal #41 "B"
- terminal #8 and control module terminal #26 "C"
- terminal #7 and control module terminal #13 "PA".
- EMS 2000:
- terminal #5 and control module terminal #23 "A"
- terminal #6 and control module terminal #37 "B"
- terminal #3 and control module terminal #9 "C"
- terminal #4 and control module terminal #22 "PA".
Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Checking the gear-shift position sensor
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Checking the gear-shift position sensor
Hint: The gear-shift position sensor may malfunction if there has been a short-circuit to supply voltage in the signal cable. Check the gear-shift position sensor as follows:
- Ignition off
- Transmission connector connected
- Control module connected.
- Ignition on
- Go into scrolling values.
- Read off the position of the gear-shift position sensor
- Move the gear selector to all shift positions a number of times. Repeatedly select the same position to check the operation of the gear-shift position sensor
Are these values OK?
Yes - FAULT FOUND
No - Replacing the component
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Checking the function of the gear-shift position sensor
- Ignition off
- Connect the 10-pin transmission connector
- Connect the control module.
- Ignition on
- Go into scrolling values.
- Read off the position of the gear-shift position sensor
- Move the gear-shift position sensor to all shift positions a number of times. Repeatedly select the same position to check the operation of the gear-shift position sensor
Are these values OK?
Yes - Remedying contact resistance and oxidation
No - Replacing the component
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Remedying contact resistance and oxidation
The cause of the diagnostic trouble code (DTC) was loose connections in the control module and transmission connectors.
Check the connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Replacing the component
Try a new gear-shift position sensor according to Replacing the gear-shift position sensor Replacing The Gear-Shift Position Sensor.
Continue - Verification
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Verification
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 gear-shift position sensor
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Intermittent fault
Faulty signal. Intermittent fault
Intermittent fault
- Check that the gear-shift position sensor is securely mounted.
- Check the cable between the gear-shift position sensor / transmission and control module terminal 1 for an open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
- Check the transmission and the control module connectors. Check the gear position sensor ground terminal. Check for loose connections 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. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
- Check the cables between the gear position sensor and the control module for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Continue - Fault-tracing information
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Fault-tracing 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 gear-shift position sensor
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