AD82.61-P-4000B | Auto pilot system (APS) diagnosis, fault memory | 19.8.97 |
MODEL 129,
140 as of 1.1.98,
168, 202, 208, 210.2,
210.0 as of 1.1.98 with CODE (351) Auto pilot system (APS)
MODEL 129,
140 as of 1.1.98,
202, 208, 210.2,
210.0 as of 1.1.98 with CODE (815) Dynamic navigation
Auto pilot system (APS) diagnosis, previous knowledge | |||
Connect Hand-Held Tester (HHT), read out fault memory | |||
| Fuses in order | ||
| Battery voltage 11-14 V | ||
Fault memory | |||
Fault code | Possible cause | Note | Remedy |
No fault code | No fault detected | If, in spite of this, a complaint is shown: Auto pilot system (APS) diagnosis, troubleshooting | |
| Internal fault on radio and navigation operating unit (APS) (A2/29) | A2/29 | |
| Switching off the radio and navigation operating unit (APS) (A2/29) because of undervoltage | ||
| Bus communication fault with CD changer (in trunk) (A2/6) | Check voltage supply of A2/6, check data cables between A2/6 and A2/29, A2/6, A2/29 | |
| Excess temperature of the navigational data CD player in navigation processor (A2/30) | The error message can only be removed from navigation processor (A2/30) with navigation CD inserted | Do not change A2/30, after cooling down the component is able to function again. |
| No vehicle speed signal | The signals come from traction systems control module (N47). The error message can only be removed from navigation processor (A2/30) with navigation CD inserted . | |
| Read error of the navigational CD player in navigation processor (A2/30) | The error message can only be removed from navigation processor (A2/30) with navigation CD inserted . | Remove CD-ROM from navigational data CD player, refer to GF82.61-P-0001-03C and check for soiling and damage. |
| GPS antenna (A2/49a2) or cable defective Models 129, 208.4 (Cabriolet): Rear GPS antenna (A2/23a2) or cable defective | The error message can only be removed from navigation processor (A2/30) with navigation CD inserted | Check cable, A2/49, Models 129, 208.4: |
| Open-circuit of the switch cable for automatic antenna or CD changer (in trunk) (A2/6) | Check cable | |
| CAN communication between radio and navigation operating unit (APS) (A2/29) and navigation processor (A2/30) interrupted | ||
| Hardware fault (mechanism) on CD changer (in trunk) (A2/6) | A2/6 | |
CD changer (in trunk) (A2/6) excess temperature | Switch off A2/6 and leave to cool down, reduce interior temperature of vehicle | ||
CD changer (in trunk) (A2/6) temperature too low | Increase temperature of vehicle interior | ||
| Cassette player or cassette defective | Change cassette, A2/29 | |
| Fault in rpm sensor (gyro sensor) | The rpm sensor is integrated in navigation processor (A2/30). The error message can only be removed from navigation processor (A2/30) with navigation CD inserted | A2/30 |
| Calibration (navigation parameter lost) | Do not change A2/30, navigation only temporarily inoperative. The error message can only be removed from navigation processor (A2/30) with navigation CD inserted | Carry out calibration with the HHT or on radio and navigation operating unit (APS) (A2/29), refer to |
| Front valve limit switch open/close defective | A2/29 | |
Code 815 only | CAN communication between traffic data recorder (A2/43) and (CTEL) interface (A34/4) interrupted or fault in A2/43 | The CAN data bus between A2/43 and A34/4 is independent (no direct connection to CAN bus of the navigation processor (A2/30) or CAN interior bus). |
Check CAN data cables between A2/43 and CTEL interface (A34/4), A2/43 |
| Self-test fault of navigational data CD player in navigation processor (A2/30) | The error message can only be removed from navigation processor (A2/30) with navigation CD inserted | Remove CD-ROM from navigational data CD player, re-insert, refer to A2/30 |
Code 815 only | CAN communication between radio and navigation operating unit (APS) (A2/29) and traffic data recorder (A2/43) interrupted |
Check CAN data cables between A2/29 and A2/43 | |
Code 815 only | Connection between CTEL handset (A34) and CTEL interface (A34/4) interrupted |
Check telephone reception at A34, Check cables |