B1309
Symptom: TOP CYCLE ERROR displayed on SID. The soft top cannot be operated.
No Motor is moving when Top is activated
Fault symptoms
TOP CYCLE ERROR displayed on SID. The soft top cannot be operated.
Conditions
This diagnostic trouble code is generated when the control module activates a movement (motor) but the movement is not confirmed by the corresponding potentiometer.
Diagnostic help
The soft top mechanism is jamming or one or more motors is defective or the control module is incorrectly programmed. The diagnostic trouble code can be generated when the motors are activated with the diagnostic tool or if the emergency closing lever is activated when an attempt is made to open the soft top.
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1.
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Check for other diagnostic trouble codes that have been generated. If there are any, rectify them as described in the relevant fault diagnosis procedure.
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2.
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To determine when the fault occurred, the diagnostic trouble code data can be used to see which motor was active at the time. This information can then be used to reproduce the fault symptom.
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3.
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Make sure the soft top, soft top cover and fifth bow are moving freely by activating the motors with the ROOF button or diagnostic tool. Alternatively, disengage the motors with the emergency closing lever and pull the soft top, soft top cover and fifth bow up and down by hand.
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Important
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This diagnostic trouble code may be generated when the various motors are operated with the diagnostic tool.
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4.
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Check the motors
Activate the motors with the diagnostic tool and make sure they are functioning correctly.
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5.
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Check the potentiometer values
If everything is functioning correctly, the diagnostic tool should display the potentiometer value, which should lie between 15 and 240 depending on the position of the soft top. Check the potentiometer value by activating the relevant motor with the ROOF button or diagnostic tool. Alternatively, disengage the motor with the emergency closing lever. The potentiometer value should change smoothly without fluctuating up and down.
It is important to check the mechanical function of the potentiometer and that it is correctly fitted. The potentiometer guide must not be damaged.
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6.
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Check the microswitches.
The diagnostic tool should display the following values if the microswitch is in working order:
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OPEN for inactive microswitch.
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CLOSED for active microswitch.
If there is a malfunction, the diagnostic tool can display the following:
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OPEN CIRCUIT for a break in the control module input.
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SHORT TO GROUND, for a short circuit to ground on the control module input.
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SHORT TO BATT+, for a short circuit to battery + on the control module input.
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REFERENCE VOLTAGE FAULT, for incorrect reference voltage to the microswitch.
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7.
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Reprogram the control module. See
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Note
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It is not possible to describe a general procedure as there are so many influencing factors. Therefore, it is necessary for the mechanic to determine what measures to take after carrying out the diagnostic help procedure above.
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