A/T - Erratic Operation/Fail-safe Mode/DTC's Set
SI B 24 13 07Automatic Transmission
June 2007
Technical Service
SUBJECT
Various Complaints Due to Poor Connection at Transmission Connector
MODEL
All model vehicles equipped with ZF Six Speed Automatic Transmission GA6HP19Z, GA6HP19ZTU, GA6HP26Z or GA6HP26ZTU.
E90, E91 and 92 (3 Series) from start of production to present
E60 and E61 (5 Series) from start of production to present
E63 and E64 (6 Series) from start of production to present
E65 and E66 (7 Series) from start of production to present
E53 (X5) from 10/2003 production up to 9/2006 production
E70 (X5) from start of production to present
SITUATION
One or more of the following complaints can be received from the customer:
^ At times the vehicle will not start, gear indicator display is not present and a transmission fail-safe light will be illuminated or a transmission fail-safe message can be seen in the Check Control display. One or more of the following faults may be stored.
- DSC - FC D358 No message (transmission control 43F) - no signal or value
- IKE - FC 00FB No CAN identification (EGS)
- DME - FC 2DCA EGS message missing, timeout
- Transmission will enter fail-safe mode while driving, when turned off the vehicle will not restart at times. One or more of the following faults may be stored.
- DSC - FC 5E62 Transmission control interface
- DSC - FC 5E67 Sporadic DCC fault
^ DSC - FC D357 No message (gearbox)
- During diagnosis the EGS cannot be identified. One or more of the following faults may be stored.
- DSC - FC 5EC6 CAN error message: gearbox is not transmitting
- DME - FC 27EC CAN_ID_ERROR_failure_message_transmission_data
- IKE - FC A3AA CAN EGS signal failure
- During programming, the measure plan indicates the EGS does not respond.
- Various complaints associated with inoperative transmission controls.
CAUSE
The transmission harness connector may have a loose pin. The situations listed above are only examples of one or more pins in the connector that can be found to be loose or pushed back causing various complaints. This condition can cause various complaints and many different faults to be stored.
Example:
Transmission Connector X8500, pin 14 is slightly pushed back causing a poor connection.
PROCEDURE
1. On a customer complaint basis only, disconnect the vehicle battery and check the transmission connector X8500 for loose or pushed back pins. It may be possible when the connector is removed the pin may move forward, check that all the pins are tight and properly installed, by using a blunt tool like a pick. Look carefully, as it is possible that a pin that is already pushed back may appear as an unused pin location. It may be necessary to remove the exhaust and lower the back of the transmission to properly inspect plug. If this step is necessary please take care to not bend shifter cable bracket otherwise shifter cable adjustment will be compromised.
2. If a pin is found loose push it forward and lock it into place. To verify effectiveness, reconnect the connector to the transmission and then remove again, inspect the pin or pins which were loose again. If all pins remain properly installed then no further action is needed.
3. If the pin pushes back again, the engine harness will need to be replaced.
PARTS
Refer to EPC proper harness part number for vehicles equipment level.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Defect Code 12 51 06 37 00
Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD
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