Self Diagnosis - Diagnostic Trouble Codes - Dual Clutch Transmission BMW M3 E90

DUAL CLUTCH TRANSMISSION DTC INDEX

DUAL CLUTCH TRANSMISSION DTC INDEX

Information saved in

GS

Fault code

5029 - P2855

Fault description

Clutch 'A' Pressure Charge Performance

Condition for fault identification

Test condition

Pressure signal OK

Clutch currently being filled

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Condition for fault memory entry

2 seconds

Action in service

1st step: Test plan identical to 0x5A44

Fault effect and breakdown warning

none

Driver information

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears R, 1, 3, 5, 7 locked out (clutch circuit 1 disabled)

Service instruction

none

GS

5030 - P2856

Clutch 'B' Pressure Charge Performance

Test condition

Pressure signal OK

Clutch currently being filled

Voltage condition

UBat > 10V

2 seconds

1st step: Test plan identical to 0x5A45

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4, 6 locked out (clutch circuit 2 disabled)

none

GS

5131 - P1930

Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 1

Test condition

Continuous

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Depends on protected object

1st step: Information for user

'Fault intended for documentation purposes. Delete fault

No component replacement! '

none

Warning light

Limp-home mode

none

GS

5132 - P1931

Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 2

Test condition

Continuous

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Depends on protected object

1st step: Information for user

'Fault intended for documentation purposes. Delete fault

No component replacement! '

none

Warning light

Limp-home mode

none

GS

5133 - P1932

Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 3

Test condition

Continuous

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Depends on protected object

1st step: Information for user

'Fault intended for documentation purposes. Delete fault

No component replacement! '

none

Warning light

Limp-home mode

none

GS

5134 - P1933

Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 4

Test condition

Continuous

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Depends on protected object

1st step: Information for user

'Fault intended for documentation purposes. Delete fault

No component replacement! '

none

Warning light

Limp-home mode

none

GS

5A25 - P1701

Double Error Position Information CAN / Serial Line

Test condition

always

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

none

none

none

none

GS

5A41 - P17BE

Clutch 1 Pressure Sensor Plausibility due to Sensor Drift

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Pressure sensor(s) defective

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test sequence 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Clutch circuit 1 locked out, starts in

Gear R with pressure control.

Result: Gears 1, 3, 5 and 7 not available, R available.

none

GS

5A41 - P178A

Clutch 1 Pressure Sensor Circuit Range/Performance

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Pressure sensor(s) defective

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test sequence 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Clutch circuit 1 locked out, starts in

Gear R with pressure control.

Result: Gears 1, 3, 5 and 7 not available, R available.

none

GS

5A41 - P178B

Clutch 1 Pressure Sensor Circuit Shorted

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Pressure sensor(s) defective

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test sequence 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Clutch circuit 1 locked out, starts in

Gear R with pressure control.

Result: Gears 1, 3, 5 and 7 not available, R available.

none

GS

5A41 - P178C

Clutch 1 Pressure Sensor Circuit/Open

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Pressure sensor(s) defective

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test sequence 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Clutch circuit 1 locked out, starts in

Gear R with pressure control.

Result: Gears 1, 3, 5 and 7 not available, R available.

none

GS

5A43 - P17BF

Clutch 2 Pressure Sensor Plausibility due to Sensor Drift

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

Precondition: Both transmission units in neutral, engine running

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test routine 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

none

GS

5A43 - P178D

Clutch 2 Pressure Sensor Circuit Range/Performance

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

Precondition: Both transmission units in neutral, engine running

2nd step: Fault category 0, 2 (undefined, offset error): => Apply pressure to both clutches

Test routine 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

none

GS

5A43 - P178E

Clutch 2 Pressure Sensor Circuit Shorted

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

Precondition: Both transmission units in neutral, engine running

2nd step: Fault category 0, 2 (undefined, offset error)

=> Apply pressure to both clutches

Test routine 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

none

GS

5A43 - P178F

Clutch 2 Pressure Sensor Circuit/Open

Test condition

320 ms have elapsed since system start

Terminal 15 is active

Terminal 50 is not active

System is not in shutdown phase

The battery voltage is greater than 10V

Diagnosis of the sensor's power-supply voltage had not detected any faults

Supplementary for offset diagnosis

Clutch has been drained

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => Continue with fault analysis

2nd step: Read out fault category

Precondition: Both transmission units in neutral, engine running

2nd step: Fault category 0, 2 (undefined, offset error): => Apply pressure to both clutches

Test routine 'Test_Offset_K1-2_02 '

2nd step: Case 1: Pressure difference Delete diagnostic fault code

2nd step: Case 2: Pressure difference > 0.5 bar 3rd step: Pressure sensor offset too high

=> Replace E-module

2nd step: Fault category 4, 8 (short circuit or open wire): Fault status

2nd step: Case 1: Persistent error 3rd step: Defective pressure sensor(s)

=> Replace E-module

2nd step: Case 2: Sporadic error 3rd step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

none

GS

5A44 - P17A1

Clutch 1 Hydraulic Circuit Pressure Too Low

Test condition

Pressure signal OK

Cut-off not switched to reservoir

The pressure operates in open-loop or closed-loop mode (i.e., not current control)

The driver circuit has not been deactivated

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

interpolated

200 ms (> 0 °C)

400 ms (< -30 °C)

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar If error is sporadic: => Delete diagnostic fault code, road test. Then assess diagnostic fault codes stored in ECU fault memory.

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => additional fault 0x5A59 logged?

2nd step: Case 1: Fault present 3rd step: => Continue repair at 0x5A59 using test plan

2nd step: Case 2: Fault not present 3rd step: => Read out fault category

Precondition: Both transmission units in neutral, engine running

3rd step: Fault category 0, 2, 4 (undefined, charging time or pressure too low)

Run through pressure analysis three times

Test routines

'Test_Druck_Leck1_01 '

'Test_Druck_Leck2_01 '

'Test_Druck_Sys15_01 '

'Test_Druck_Sysmax_01 '

3rd step: Case 1: All indices <= 1 4th step: => Delete diagnostic fault code

3rd step: Case 2: At least one index > 1 4th step: - Replace transmission

3rd step: Fault category 8 (pressure too high)

Possible damage to clutch 1 from excessive pressure.

> Read out frequency counter (diagnostic fault code 0x5A44)

> Assessment 4th step: => Perform service functions 'Learn clutch/ PV1' + 'Learn kiss-point'

4th step: Case 1: Service functions executed without problems 5th step: => Delete diagnostic fault code

4th step: Case 2: Error during service functions 5th step: => Repair according to service function

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears R, 1, 3, 5, 7 locked out (clutch circuit 1 disabled)

none

GS

5A44 - P17A2

Clutch 1 Hydraulic Circuit Pressure Too High

Test condition

Pressure signal OK

Cut-off not switched to reservoir

The pressure operates in open-loop or closed-loop mode (i.e., not current control)

The driver circuit has not been deactivated

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

interpolated

200 ms (> 0 °C)

400 ms (< -30 °C)

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar If error is sporadic: => Delete diagnostic fault code, road test. Then assess diagnostic fault codes stored in ECU fault memory.

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => additional fault 0x5A59 logged?

2nd step: Case 1: Fault present 3rd step: => Continue repair at 0x5A59 using test plan

2nd step: Case 2: Fault not present 3rd step: => Read out fault category

Precondition: Both transmission units in neutral, engine running

3rd step: Fault category 0, 2, 4 (undefined, charging time or pressure too low)

Run through pressure analysis three times

Test routines

'Test_Druck_Leck1_01 '

'Test_Druck_Leck2_01 '

'Test_Druck_Sys15_01 '

'Test_Druck_Sysmax_01 '

3rd step: Case 1: All indices <= 1 4th step: => Delete diagnostic fault code

3rd step: Case 2: At least one index > 1 4th step: - Replace transmission

3rd step: Fault category 8 (pressure too high)

Possible damage to clutch 1 from excessive pressure.

> Read out frequency counter (diagnostic fault code 0x5A44)

> Assessment 4th step: => Perform service functions 'Learn clutch/ PV1' + 'Learn kiss-point'

4th step: Case 1: Service functions executed without problems 5th step: => Delete diagnostic fault code

4th step: Case 2: Error during service functions 5th step: => Repair according to service function

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears R, 1, 3, 5, 7 locked out (clutch circuit 1 disabled)

none

GS

5A45 - P17A4

Clutch 2 Hydraulic Circuit Pressure Too Low

Test condition

Pressure signal OK

Cut-off not switched to reservoir

The pressure operates in open-loop or closed-loop mode (i.e., not current control)

The driver circuit has not been deactivated

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

interpolated

200 ms (> 0 °C)

400 ms (< -30 °C)

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar If error is sporadic: => Delete diagnostic fault code, road test. The assess diagnostic fault codes stored in ECU fault memory.

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => additional diagnostic fault code 0x5A5A logged?

2nd step: Case 1: Fault present 3rd step: => Continue repair at 0x5A5A using test plan

Precondition: Both transmission units in neutral, engine running

2nd step: Case 2: Fault not present 3rd step: => Read out fault category

3rd step: Error type 0, 2, 4 (undefined, charging time or pressure too low)

Run through pressure analysis three times

Test procedures

'Test_Druck_Leck1_01 '

'Test_Druck_Leck2_01 '

'Test_Druck_Sys15_01 '

'Test_Druck_Sysmax_01 '

3rd step: Case 1: All indices <= 1 4th step: => Delete diagnostic fault code

3rd step: Case 2: At least one index > 1 4th step: - Replace transmission

3rd step: Fault category 8 (pressure too high)

Possible damage to clutch 2 from excessive pressure.

> Read out frequency counter (diagnostic fault code 0x5A44)

> Assessment 4th step: => Perform service functions 'Learn clutch/ PV2' + 'Learn kiss-point'

4th step: Case 1: Service functions executed without problems 5th step: => Delete diagnostic fault code, road test.

4th step: Case 2: Error during service functions 5th step: => Repair according to service function

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4, 6 locked out (clutch circuit 2 disabled)

none

GS

5A45 - P17A5

Clutch 2 Hydraulic Circuit Pressure Too High

Test condition

Pressure signal OK

Cut-off not switched to reservoir

The pressure operates in open-loop or closed-loop mode (i.e., not current control)

The driver circuit has not been deactivated

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

interpolated

200 ms (> 0 °C)

400 ms (< -30 °C)

Precondition: Engine off

1st step: -> Read out raw data [clutch 1 pressure sensor, clutch 2 pressure sensor]

Tolerance range

0.2 bar < pressure < 1.8 bar If error is sporadic: => Delete diagnostic fault code, road test. The assess diagnostic fault codes stored in ECU fault memory.

1st step: Case 1: Pressure in one of the / both clutches outside tolerance range 2nd step: Defective pressure sensor(s)

=> Replace E-module

1st step: Case 2: Pressure in both clutches within tolerance range 2nd step: => additional diagnostic fault code 0x5A5A logged?

2nd step: Case 1: Fault present 3rd step: => Continue repair at 0x5A5A using test plan

Precondition: Both transmission units in neutral, engine running

2nd step: Case 2: Fault not present 3rd step: => Read out fault category

3rd step: Error type 0, 2, 4 (undefined, charging time or pressure too low)

Run through pressure analysis three times

Test procedures

'Test_Druck_Leck1_01 '

'Test_Druck_Leck2_01 '

'Test_Druck_Sys15_01 '

'Test_Druck_Sysmax_01 '

3rd step: Case 1: All indices <= 1 4th step: => Delete diagnostic fault code

3rd step: Case 2: At least one index > 1 4th step: - Replace transmission

3rd step: Fault category 8 (pressure too high)

Possible damage to clutch 2 from excessive pressure.

> Read out frequency counter (diagnostic fault code 0x5A44)

> Assessment 4th step: => Perform service functions 'Learn clutch/ PV2' + 'Learn kiss-point'

4th step: Case 1: Service functions executed without problems 5th step: => Delete diagnostic fault code, road test.

4th step: Case 2: Error during service functions 5th step: => Repair according to service function

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4, 6 locked out (clutch circuit 2 disabled)

none

GS

5A56 - P1900

Transmission Fluid Cooler No Flow Detected

Test condition

Diagnosis based on spray sensor unable to detect temperature rise at sensor during acceleration from rest

Diagnosis based in pressure sensor unable to detect pressure fluctuations

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Engine running

1st step: Read out frequency counter If fault is sporadic: => Delete fault

1st step: Case 1: Frequency <= 3, Fault not active 2nd step: => Delete diagnostic fault code

1st step: Case 2: Frequency > 3 or fault active continuously

2nd step: => Is diagnostic fault code 0x5A57 or 0x5A5B also logged?

2nd step: Case 1: Diagnostic fault code not logged 3rd step: => Delete diagnostic fault code

2nd step: Case 2: Diagnostic fault code logged 3rd step: Control valve PV7 sticks at 0 cooling

=> Replace mechatronic module

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

none

GS

5A56 - P1900

Transmission Fluid Cooler No Flow Detected

none

none

none

none

none

GS

5A59 - P2854

Clutch 'B' Pressure Discharge Performance

Test condition

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

Precondition: Both transmission units in neutral, engine running

1st step: Check deactivation path for clutch 1

Test routine 'Test_CutOff_K1_02 '

1st step: Case 1: Pressure level remains constant in clutch 1 2nd step: Shift valve defective

=> Replace mechatronic module

1st step: Case 2: No pressure in clutch 1 2nd step: => PV1, Check 0 position

Test routine 'Test_PV1-0_02 '

2nd step: Case 1: Pressure < 1.8 bar in clutch 1 3rd step: => Delete diagnostic fault code

2nd step: Case 2: Pressure >= 1.8 bar in clutch 1 3rd step: Defective control valve

=> Replace mechatronic module

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears R, 1, 3, 5 and 7 no longer available (clutch circuit 1 disabled)

none

GS

5A59 - P2853

Clutch 'A' Pressure Discharge Performance

none

none

none

none

none

GS

5A5A - P2853

Clutch 'A' Pressure Discharge Performance

Test condition

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

1st step: Check deactivation path for clutch 2

Test routine 'Test_CutOff_K2_02 '

1st step: Case 1: Pressure level remains constant in clutch 2

2nd step: Shift valve defective

=> Replace mechatronic module

1st step: Case 2: No pressure in clutch 2 2nd step: => PV2, Check 0 position

Test routine 'Test_PV2-0_02 '

2nd step: Case 1: Pressure < 1.8 bar in clutch 2 3rd step: => Delete diagnostic fault code

2nd step: Case 2: Pressure >= 1.8 bar in clutch 2 3rd step: Defective control valve

=> Replace mechatronic module

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Gears 2, 4 and 6 no longer available (clutch circuit 2 locked out)

none

GS

5A5A - P2854

Clutch 'B' Pressure Discharge Performance

none

none

none

none

none

GS

5A61 - P179C

Shift Rod 1/3 Sensor Mechanical

Test condition

Engine on

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

1st step: Perform test routine 'Test_Gs_04_Prufung_02/evaluation' 2nd step

1st step: Case 1: Test OK 2nd step: => Delete fault

1st step: Case 2: Test not OK 2nd step: => Replace

mechatronic module or transmission (information as result of test routine)

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

none

GS

5A62 - P179D

Shift Rod 2/R Sensor Mechanical

Test condition

Engine on

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

1st step: Procedure identical to 0x5A61

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

none

GS

5A63 - P179E

Shift Rod 4/6 Sensor Mechanical

Test condition

Engine on

Voltage condition

UBat > 10V

none

1st step: Procedure identical to 0x5A61

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

none

GS

5A64 - P179F

Shift Rod 5/7 Sensor Mechanical

Test condition

Engine on

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

1st step: Procedure identical to 0x5A61

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

none

GS

5A65 - P17A8

Shift Rod 4/6 Sensor Circuit Low

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A83)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A83

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 6-N-4 in sequence during this process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, i.e., diagnostic fault code 0x5A65 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A65 - P17A9

Shift Rod 4/6 Sensor Circuit High

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A83)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A83

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 6-N-4 in sequence during this process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, i.e., diagnostic fault code 0x5A65 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A66 - P17AA

Shift Rod 5/7 Sensor Circuit Low

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A82)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A82

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 5-N-7 in sequence during this process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A66 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A66 - P17AB

Shift Rod 5/7 Sensor Circuit High

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A82)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A82

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 5-N-7 in sequence during this process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A66 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A67 - P17A6

Shift Rod 2/R Sensor Circuit Low

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A83)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A83

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 2-N-R in sequence during the process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A67 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A67 - P17A7

Shift Rod 2/R Sensor Circuit High

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A83)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A83

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 2-N-R in sequence during the process

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A67 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A68 - P173E

Shift Rod 1/3 Sensor Circuit Low

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A82)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A82

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 1-N-3 in sequence

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A68 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A68 - P173F

Shift Rod 1/3 Sensor Circuit High

Test condition

Diagnosis always runs

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms

1st step: Was a diagnostic fault code for power-supply voltage logged at the same mileage (0x5A82)?

1st step: Case 1: Fault present 2nd step: => Delete diagnostic fault code

Continue fault analysis at 0x5A82

Precondition: Both clutches disengaged, engine running

1st step: Case 2: Fault is not present 2nd step: Shift gears in sequence, assess current position

Test routines 'Test_Gange_schalten1_04 '

'Test_Gange_schalten2_04 '

shifting gears 1-N-3 in sequence

Additional information: Shift pattern with shift rod positions

2nd step: Case 1: Correlation between specified and actual gears 3rd step: Case 1: If frequency = 1

=> Delete diagnostic fault code

3rd step: Case 2: If frequency > 1 4th step: => Check during road test (continue with Case 2)

2nd step: Case 2: Specified and actual gears fail to correlate, no perceptible motion 3rd step: => Check during road test, assess condition as follows

3rd step: Case 1: Shift response displays conspicuous characteristics, meaning diagnostic fault codes are again active 4th step: Defective sensor

=> Replace E-module

3rd step: Case 2: Shift response with no unusual symptoms, meaning diagnostic fault code 0x5A68 is not active 4th step: => Delete diagnostic fault code

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Shift rod locked (both gears), if gear on shift rod is recognized as shifted transmission unit is disabled

Results: Spare gear strategy omits the disabled gears

none

GS

5A72 - P1891

System Voltage High

Test condition

Terminal 15 ON

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms internal diagnosis

1st step: Assess frequency

1st step: Case 1: Frequency = 1 and fault not continuously active 2nd step: => Delete fault

1st step: Case 2: Frequency > 1 or fault active continuously 2nd step: => Power-supply voltage readout (vehicle electrical system)

Specified: 9V < U < 18V

Precondition: Engine running

2nd step: => Start engine

> Readout power-supply voltage (vehicle electrical system)

Specified: 10V < U < 18V

2nd step: => Assess fault category

2nd step: Case 1: 0x01 Power-supply voltage above specified limit 3rd step: => Notice: It is possible that an external power source has been connected (e.g., jump start)

2nd step: Case 2: 0x02 Power-supply voltage below specified limit

or

0x08 Voltage is implausible 3rd step: => Perform energy diagnosis on vehicle (if energy diagnosis has already been performed with no problems found, continue with Case 2)

3rd step: Case 1: Vehicle electrical system as source of power-supply voltage problem 4th step: => Delete diagnostic fault code

3rd step: Case 2: Vehicle electrical system OK. 4th step: => Use current-flow diagram to check power-supply voltage to transmission in E-box

=> Use current-flow diagram to check power-supply voltage to transmission (take measurements on wires, checks contacts and pins)

Case 1: Wiring not OK

=> Replace/repair wiring harness

Case 2: Wiring OK

=> Replace transmission If fault is sporadic

4th step: IMPORTANT!: Deactivate additional error path pending release of individual components (internal wiring harness, mechatronic module, E-module).

Open transmission (using Repair Manual), check continuity in wiring harness and inspect contacts

Case 1: If wiring harness is defective, replace it

Case 2: Wiring harness OK, then replace E-module

none

Warning light

No

limp-home mode

??? (FB_SG_VersS_01)

none

GS

5A72 - P1892

System Voltage Low

Test condition

Terminal 15 ON

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

100 ms internal diagnosis

1st step: Assess frequency

1st step: Case 1: Frequency = 1 and fault not continuously active 2nd step: => Delete fault

1st step: Case 2: Frequency > 1 or fault active continuously 2nd step: => Power-supply voltage readout (vehicle electrical system)

Specified: 9V < U < 18V

Precondition: Engine running

2nd step: => Start engine

> Readout power-supply voltage (vehicle electrical system)

Specified: 10V < U < 18V

2nd step: => Assess fault category

2nd step: Case 1: 0x01 Power-supply voltage above specified limit 3rd step: => Notice: It is possible that an external power source has been connected (e.g., jump start)

2nd step: Case 2: 0x02 Power-supply voltage below specified limit

or

0x08 Voltage is implausible 3rd step: => Perform energy diagnosis on vehicle (if energy diagnosis has already been performed with no problems found, continue with Case 2)

3rd step: Case 1: Vehicle electrical system as source of power-supply voltage problem 4th step: => Delete diagnostic fault code

3rd step: Case 2: Vehicle electrical system OK. 4th step: => Use current-flow diagram to check power-supply voltage to transmission in E-box

=> Use current-flow diagram to check power-supply voltage to transmission (take measurements on wires, checks contacts and pins)

Case 1: Wiring not OK

=> Replace/repair wiring harness

Case 2: Wiring OK

=> Replace transmission If fault is sporadic

4th step: IMPORTANT!: Deactivate additional error path pending release of individual components (internal wiring harness, mechatronic module, E-module).

Open transmission (using Repair Manual), check continuity in wiring harness and inspect contacts

Case 1: If wiring harness is defective, replace it

Case 2: Wiring harness OK, then replace E-module

none

Warning light

No

limp-home mode

??? (FB_SG_VersS_01)

none

GS

5A85 - P1748

Transmission Control Module Self-Test

Test condition

always

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200

1st step: Defective E-module

=> Replace E-module

none

Warning light

No

limp-home mode

Reset control module

none

GS

5A86 - P1920

Transmission Fluid Temperature Sensor 'C' Circuit Range/Performance

Test condition

always

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

Internal diagnosis: dia_c_sg_debounce_temp

ECU fault memory debounce time: Immediate

1st step: Read out frequency counter If fault is sporadic: => Delete fault

1st step: Case 1: Frequency = 1, fault is not active

1st step: Case 2: Frequency > 1 or fault active continuously

2nd step: => STATUS_ROHWERTE_LESEN

[STAT_SG_TEMPERATUR_WERT

STAT_TEMPERATURSENSOR_1_WERT

STAT_TEMPERATURSENSOR_2_WERT]

> Compare the data

Tolerance range

Difference between ECU temperature and sensor temperature max. 20°C, between temperature sensors max. 10°C

2nd step: Case 1: Temperature data OK 3rd step: => Delete diagnostic fault code

2nd step: Case 2: Temperature data not OK or diagnostic fault code 0x5A70 and/or 0x5A71 also logged at same mileage 3rd step: Defective temperature sensor(s)

=> Replace E-module

none

Warning light

ID 365/ 'Transmission malfunction! Drive gently'

Limp-home mode

Clutch circuit 2 disabled

none

GS

5A8B - P0218

Transmission Fluid Over Temperature Condition

Test condition

always

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

none

1st step: => Fault is linked to clutch-engagement phases

1. 0x5A53 (clutch: Phase Red)
2. 0x5A54 (clutch: Phase Black)
3. > Continue fault rectification with appropriate path for "critical temperature in oil pan"

none

Warning light

ID290/ 'Transmission malfunction! No continued driving possible after stop' (or passive message in cluster)

Limp-home mode

None (because linked to clutch phases)

none

GS

CF07 - U0001

High Speed CAN Communication Bus

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms over ECU fault memory

none

none

none

none

GS

CF13 - U0100

Lost Communication With ECM/PCM 'A'

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF13 - U114A

Message Monitoring Engine Control Torque 1 Alive Check

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF13 - U114C

Message Monitoring Engine Control Torque 1 Check Sum Error

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF14 - U114E

Lost Communication With Engine Control Torque 2

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF14 - U114D

Message Monitoring Engine Control Torque 2 Alive Check

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF14 - U114F

Message Monitoring Engine Control Torque 2 Check Sum Error

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF15 - U115B

Lost Communication With Engine Control Torque 3

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF15 - U115A

Message Monitoring Engine Control Torque 3 Alive Check

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF15 - U115C

Message Monitoring Engine Control Torque 3 Check Sum Error

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms, internal diagnosis

none

none

Warning light

Limp-home mode

none

GS

CF1C - U115E

Lost Communication With Engine Data

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

400 ms over ECU fault memory

none

none

Warning light

Limp-home mode

none

GS

CF28 - U119F

Lost Communication With OBD Data Engine

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

5 sec.

1st step: Read out frequency

1st step: Case 1: Frequency = 1 and fault is not active 2nd step: => Delete fault

1st step: Case 2: Frequency >1 and/or active

1. Have comparable diagnostic fault codes been logged in other ECUs? 2nd step: => Continue analysis with transmitter of faulty message

Note. No transmission defect - No component replacement!

none

Warning light

Limp-home mode

none

GS

CF34 - P1771

CAN Torque Interface Plausibility

Test condition

1. Terminal 15 ON Voltage in onboard electrical system > 10V
2. CAN message with no errors

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms over ECU fault memory

none

none

Warning light

Limp-home mode

none

GS

CF36 - P1778

CAN Message Monitoring Pedal Position Sensor Signal Plausibility

Test condition

Terminal 15 ON, vehicle electrical system voltage > 10V

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms over ECU fault memory

none

none

Warning light

Limp-home mode

none

GS

CF3E - P1727

CAN Engine Speed

Test condition

1. Terminal 15 ON Voltage in onboard electrical system > 10V
2. CAN message with no errors

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

200 ms over ECU fault memory

none

none

Warning light

Limp-home mode

none

GS

CF42 - P1767

CAN Wheel Speeds Rear Axle

Test condition

1. Terminal 15 ON OR ECUs in active shutdown phase
2. Voltage in onboard electrical system > 10V
3. CAN message with no errors

Terminal condition: Terminal 15 ON

Voltage condition

UBat > 10V

1 sec.

none

none

none

none

See also:
• DTC P2855; BMW DTC 5029