| All values measured to ground unless otherwise noted | |||
| N69/1 | |||
| 1.1 | Circuit 30 main power input | 12 VDC at all times | Feed from F1f8 |
| 1.3 | Main ground to W18 | Approx. 0 Ohms to ground | |
| 3.6 | L. outside rearview mirror heating (-) output | Engine running: 12 VDC to pin 3.13 (+) depending on outside teperature and dew point | |
| 3.9 | CAN Class B bus (low side). Mid speed data transfer bus input and output, exchanges data between various ECMs | No reliable test. Check continuity to all appropriate ECMs. Approx. 5 VAC when data is on bus | |
| 3.10 | L. outside rearview mirror in/out and up/down adjustment output | See pin S3.11 and S3.12 | |
| 3.11 | Left outside rearview mirror in/out adjustment output | Key in position "1": 12 VDC to pin S3.10 with mirror moving out, polarity reversable | |
| 3.12 | Left outside rearview mirror up/down adjustment output | Key in position "1": 12 VDC to pin S3.10 with mirror moving up, polarity reversable | |
| 3.13 | L. outside rearview mirror heating (+) output | See pin S3.6 | |
| 3.18 | CAN Class B bus (high side) | See pin S3.9 | |
| N69/2 | |||
| 1.1 | Circuit 30 main power input | 12 VDC at all times | Feed from F4f3 |
| 1.3 | Main ground to W19 | Approx. 0 Ohms to ground | |
| 3.6 | R. outside rearview mirror heating (-) output | Engine running: 12 VDC to pin S3.13 (+) depending on outside teperature and dew point | |
| 3.9 | CAN Class B bus (low side). Mid speed data transfer bus input and output, exchanges data between various ECMs | No reliable test. Check continuity to all appropriate ECMs. Approx. 5 VAC when data is on bus | |
| 3.10 | R. outside rearview mirror in/out and up/down adjustment output | See pin S3.11 and S3.12 | |
| 3.11 | Right outside rearview mirror in/out adjustment output | Key in position "1": 12 VDC to pin S3.10 with mirror moving out, polarity reversable | |
| 3.12 | Right outside rearview mirror up/down adjustment output | Key in position "1": 12 VDC to pin S3.10 with mirror moving up, polarity reversable | |
| 3.13 | R. outside rearview mirror heating (+) output | See pin S3.6 | |
| 3.18 | CAN Class B bus (high side) | See pin S3.9 | |
| N70 | |||
| A.5 | Driver-side outside rearview mirror dimming element voltage supply | No reliable test | Note 2 |
| A.8 | Driver-side outside rearview mirror dimming element voltage supply | See pin A.5 | Note 2 |
| N72 | |||
| 1.1 | Backup recognition signal input, disables dimming function in backup mode |
Ignition on, gear shift lever in position "R" 12VDC, mirror surface becomes brighter | |
| 1.2 | Circuit 58d input, "Dimmed Instrument Illumination" voltage | Varies from 0.5-12 VDC, depending on setting of dimming value and ambient brightness | |
| 1.3 | CAN Class B bus (low side). Mid speed data transfer bus input and output, exchanges data between various ECMs | No reliable test. Check continuity to all appropriate ECMs. Approx. 5 VAC when data is on bus | |
| 1.4 | CAN Class B bus (high side) | See pin A.3 | |
| 1.5 | Circuit 30 main power input | 12 VDC at all times | Feed from F1f7 |
| 1.6 | Main ground to W18 | Approx. 0 Ohms to ground | |
| Note 1 | Due to various functions N69/1, N69/2, N70 and N72 are split up in several system diagrams, therefore only the relating pins are listed. Pins not shown are unrelated to this system | ||
| Note 2 | Dimming functional test | Cover daylight sensor of interior mirror, mirror surface of interior and driver-side outside mirrors become dark with flashlight shining towards interior mirror | |