Short-Circuit To Ground
Short-circuit to ground
Checking lock-up solenoid SL
- Ignition on.
- Move gear selector to position P.
Activate solenoid SL. Read off solenoid status. The status can alternate between OFF/ON.
Does the status alternate?
Yes - Intermittent fault
No - Connecting the breakout box
Connecting the breakout box
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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 resistance in solenoid SL circuit
FAULT FOUND - Checking resistance in solenoid SL circuit
No Fault Found - Checking resistance in solenoid SL circuit
FAULT-TRACING FAILED - Checking resistance in solenoid SL circuit
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Checking resistance in solenoid SL circuit
- Ignition off.
- Control module disconnected.
Connect an ohmmeter between #2 and #1 on the breakout box.
The ohmmeter should read approximately 12-16 ohms.
OK - Checking the control module
Not OK - Checking the signal wiring resistance to ground in the transmission
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Checking the control module
- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Move gear selector to position P.
Activate solenoid SL. Read off solenoid status. The status should alternate between OFF/ON.
Does the status alternate?
Yes - Fault-tracing information
No - Replacing component
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Fault-tracing information
Fault-tracing indicates that the fault is no longer present.
Continue - FAULT FOUND
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Replacing component
- Ignition off.
Try a new control module according to Replacing the transmission control module (TCM) .
Continue - Verification
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Checking the signal wiring resistance to ground in the transmission
- Ignition off.
- Disconnect the 6-pin transmission connector. For further information about connectors, see Transmission connectors Transmission Connectors.
Connect an ohmmeter between the 6-pin transmission connector terminal 2 (transmission side) and transmission housing.
The ohmmeter should read approximately 12-18 -.
OK - Checking for a short-circuit
Not OK - Checking resistance in lock-up solenoid SL
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Checking for a short-circuit
Check cable between transmission connector terminal 2 and transmission control module (TCM) #2 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 resistance in lock-up solenoid SL
- Ignition off.
- Open the control system according to Replacing control system Service and Repair.
- Disconnect solenoid SL.
Connect an ohmmeter between the pin on solenoid SL and the transmission housing.
The ohmmeter should read approximately 12-16 ohms.
OK - Checking for a short-circuit
Not OK - Replacing component
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Checking for a short-circuit
Check cable between solenoid SL and 6-pin transmission connector terminal 2 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
To replace cable harness, see Inspecting / replacing the cable harness for the solenoids Inspecting / Replacing The Cable Harness For The Solenoids.
Continue - Verification
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Replacing component
Try a new solenoid SL according to Solenoids, inspection/replacement Removal and Replacement.
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 on.
- Gear selector in P.
Activate solenoid SL. Read off solenoid status. The status should alternate between OFF / ON.
Does the status change?
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 lock-up solenoid SL
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Intermittent fault
Short-circuit to ground. Intermittent fault
Intermittent fault
Check the cable between solenoid SL in the transmission and control module terminal 2 for an intermittent short-circuit to ground 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 lock-up solenoid SL
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