B1462
Symptom: The fifth bow latch cannot be operated.
#5 Bow Latch Motor. Short Circuit / Short to Ground / Stall Current
Fault symptoms
The fifth bow latch cannot be operated.
Conditions
Open circuit or short to ground on pin 2 (K20) or pin 12 (K20).
Warning
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The normal control module safety functions are disconnected when the soft top mechanism is operated with the diagnostic tool. The motors continue to run as long as the diagnostic tool activates them, irrespective of the position of the soft top, fifth bow or soft top cover. Use caution and always lower the rear seat backrest.
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Diagnostic help
The fifth bow latch motor can be activated and its status read with the diagnostic tool.
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Connect the diagnostic tool.
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Turn the ignition switch to the ON position.
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Read the status of the motor or activate it.
The status of the motor can be:
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Also make sure the latch mechanism can move freely without getting jammed.
The direction of rotation of the latch motor can be changed by reversing the polarity.
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The motor UNLOCKS when pin 2 (K20) is +.
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The motor LOCKS when pin 12 (K20) is +.
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Diagnostic procedure
1. Check the power supply to the latch motor
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Connect the diagnostic tool.
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Turn the ignition switch to the ON position.
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Connect a test lamp and activate as follows:
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between pin 1 and ground, activate UNLOCK
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between pin 2 and ground, activate LOCK
The test lamp should light up.
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Does the test lamp light up?
Continue with step 2.
Check and if necessary rectify the relevant lead. Continue with step 3.
2. Check the mechanical function of the latch mechanism
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Make sure the latch mechanism can move freely without getting jammed.
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Is the function correct?
Change the latch motor. Continue with step 3.
Rectify the fault. Continue with step 3.
3. Final check
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Clear the diagnostic trouble codes.
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Activate the soft top with the ROOF button and operate it for a few cycles.
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Make sure the soft top is functioning correctly and that no diagnostic trouble codes are generated.
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Has the diagnostic trouble code recurred?
Change the control module as described in
The fault has been rectified.
