Torque limitation
Input signal from automatic transmission
Fault symptoms
CHECK ENGINE lamp (MIL) on. CHECK GEARBOX lamp on.
Conditions
Diagnostic trouble code: P1624 Motronic 4.1, control module
Diagnostic trouble code: P1842 Transmission control module (TCM).
Diagnostic procedure
1. Check the wiring
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Remove the Motronic control
module and the transmission control module.
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Check for continuity in the lead
between:
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Check the lead for open circuit and
shorting.
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Is the lead OK?
Continue with point 2.
Rectify the fault. Continue with point 3.
2. Check the output signal
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Plug in the transmission control
module.
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Turn the ignition switch to the ON
position.
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Connect the test lamp to the
Motronic control module between:
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Connect the ISAT Scan
Tool.
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Select "AUT
TRANSMISSION".
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Select "TORQUE
LIMITATION".
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The test lamp should flash.
Result OK?
Continue with point 3.
Continue fault diagnosis as described in Service Manual 4:2 "Automatic
transmission".
3. Final check
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Clear the diagnostic trouble
codes.
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Implementation of driving cycle:
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Evaluation of driving cycle:
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Has the diagnostic trouble code recurred?
Continue as described in
.
The steps taken to rectify the fault were correct.
