Fault overview

System error System error System error System error System error System error System error Fault memory Fault memory Fault memory

91 - D 45 91 - D 45 91 - D 46 91 - D 46 91 - D 47 91 - D 48 91 - D 48 91 - D 49 91 - D 49 91 - D 50

Fault, Fault code

Possible causes, elimination, notes

Test point 1

Outside sensor on right does not function Fault code 1

This fault is stored in the following cases:

1. Open circuit in the supply lead to the outside sensor on right.

2. Short to B+ in the supply lead to the outside sensor on right.

3. Short to ground in the supply lead to the outside sensor on right, Elimination:

Delete fault memory, disengage reverse gear and switch off ignition. Then switch on ignition, engage reverse gear again and read out fault memory.

If the fault reappears, check plug on sensor for open circuit.

If there is no open circuit, check for continuity with an ohmmeter from sensor connector pin 1 to pin 4 and pin 1 to pin 2. Continuity should not be measured.

If no short circuit can be detected, replace sensor.

1. Open circuit in the supply lead to the inside sensor on right.

2. Short to B+ in the supply lead to the inside sensor on right.

3. Short to ground in the supply lead to the inside sensor on right. Elimination:

Delete fault memory, disengage reverse gear and switch off ignition. Then switch on ignition, engage reverse gear again and read out fault memory.

If the fault reappears, check plug on sensor for open circuit.

Test point 2

Inside sensor on right does not function Fault code 2

This fault is stored in the following cases:

Fault, Fault code_Possible causes, elimination, notes

If there is no open circuit, check for continuity with an ohmmeter from sensor connector pin 1 to pin 4 and pin 1 to pin 2. Continuity should not be measured.

If no short circuit can be detected, replace sensor.

Test point 3

Inside sensor on left does not function Fault code 3

This fault is stored in the following cases:

1. Open circuit in the supply lead to the inside sensor on left.

2. Short to B+ in the supply lead to the inside sensor on left.

3. Short to ground in the supply lead to the inside sensor on left. Elimination:

Delete fault memory, disengage reverse gear and switch off ignition. Then switch on ignition, engage reverse gear again and read out

If the fault reappears, check plug on sensor for open circuit.

If there is no open circuit, check for continuity with an ohmmeter from sensor connector pin 1 to pin 4 and pin 1 to pin 2. Continuity

If no short circuit can be detected, replace sensor.

Test point 4

Outside sensor on left does not function Fault code 4

This fault is stored in the following cases:

1. Open circuit in the supply lead to the outside sensor on left.

2. Short to B+ in the supply lead to the outside sensor on left.

3. Short to ground in the supply lead to the outside sensor on left.

Elimination:

Delete fault memory, disengage reverse gear and switch off ignition Then switch on ignition, engage reverse gear again and read out fault memory.

If the fault reappears, check plug on sensor for open circuit.

If there is no open circuit, check for continuity with an ohmmeter from sensor connector pin 1 to pin 4 and pin 1 to pin 2. Continuity

If no short circuit can be detected, replace sensor.

Test point 5

Control module supply This fault is stored in the following cases:

Fault code 5 2. If there is a fault in the generator

Elimination:

Examine battery and generator voltages.

Select Control module supply voltage and Sensor supply voltage under the menu item Actual values, and check the values with reverse gear engaged and the engine running.

Control module supply voltage display approx. 12 V

Sensor supply voltage display approx. 8 V

Delete fault memory, disengage reverse gear and switch off ignition. Then switch on ignition, engage reverse gear again and read out

Fault, Fault code

Possible causes, elimination, notes

Test point 6

Control module supply

This fault is stored in the following cases: 1. Low vehicle voltage voltage <6.5 V Fault code 6

2. If there is a short circuit in the supply leads Elimination:

Examine battery and generator voltages.

Select Control module supply voltage and Sensor supply voltage under the menu item Actual values, and check the values with reverse gear engaged and the ignition switched on.

Control module supply voltage display approx. 12 V

Sensor supply voltage display approx. 8 V

Pull out number plate light and check for continuity with an ohmmeter on the pin and sleeve side of the plug connection pin 4 towards pin 3.

This fault is stored in the following cases:

1. Low vehicle voltage

2. If there is a short circuit in the supply leads

3. Faulty sensors or a faulty control module Elimination:

Examine battery and generator voltages.

Select Control module supply voltage and Sensor supply voltage under the menu item Actual values, and check the values with reverse gear engaged and the ignition switched on.

Control module supply voltage display approx. 12 V

Sensor supply voltage display approx. 8 V

Test point 7

Transmission / Reception pulse

Fault code 7

91 01 Diagnosis/troubleshooting ParkAssistent (System P 01)

Fault. Fault ende Possible causes, elimination, notes

Delete fault memory, disengage reverse gear and switch off ignition Then switch on ignition, engage reverse gear again and read out fault memory.

If the fault reappears and one or several sensors are detected as being faulty as well, replace sensor(s).

Test point 8

EPROM data faulty or parameter set not programmed Fault code 8

This fault is stored in the following cases:

1. The control module is faulty.

2. The control module is not correctly programmed. Elimination:

Delete fault memory, disengage reverse gear and switch off ignition Then switch on ignition, engage reverse gear again and read out

If the fault reappears, check that the vehicle type is correctly coded, If the coding is correct, replace control module.

Test point 9

EPROM data faulty or parameter set incorrectly

Fault code 9

This fault is stored in the following cases:

1. The control module is faulty.

2. The control module is not correctly programmed. Elimination:

Delete fault memory, disengage reverse gear and switch off ignition. Then switch on ignition, engage reverse gear again and read out

If the fault reappears, select menu item Coding and check if the

If the coding is correct, replace control module.

Test point 10

Unknown fault code Fault code 0

This fault is stored in the following case:

Corrosion of ground points Elimination:

Inspect the ground points for corrosion. Clear fault memory.

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