Preparation for Test:
1. Review sections: C/1, 
12,
13,
20,
21,
31,
2. Review connecting of test equipment, see section 0,
3. Voltage supply to all control modules and CAN bus ok, see DM,
B&A, Vol. 2.1, section 7.1, >23,
4. All fuses are ok,
5. Ignition: ON
6. All CAN data line connections must be connected.
The diagnostic trouble codes (DTC's) can only be read out and erased using
the Hand-Held Tester (HHT).
DTCs for the system being checked may be located in other control modules,
therefore it is important to check the DTC memory on all control modules
that are relevant to the system being checked.
While performing the DTC readout, it is possible that DTCs may appear that
are not relevent to the system being checked, meaning that all stored DTCs
in that particular control module are being displayed.
Non-relevant DTCs are described in each system as necessary.
Abreviations:
  
 Front driver-side door control module
(N69/1)
 Front passenger-side door control
module (N69/2)
  
Lower control field control module (N72)
   
Left seat adjustment
Right seat adjustment
The noted abreviations (TSG I, TSG 2, ESV-L, ESV-R) are located in
the header above each of the following DTC memory charts and advise of which
control module the DTC is stored in.
Note regarding Diagnostic Trouble Codes (DTC's):
Current diagnostic trouble codes are highlighted in black on the display.
Additional detailed fault information based on fault type is displayed with
nearly all diagnostic codes (DTC's) such as:
>  Resistance too great
< Resistance too low
  -
Short circuit to ground (GND)
+
Short circuit to positive (POS)
-//- Open circuit
With some DTCs additional information such as fault frequency can be readout.
Fault frequency
Faults are noted by frequency of occurrence, i.e.: 4 periodic faults,
4 occurances. |
DTC
 |
Possible cause |
Test step/Remedy 1) |
 |
Front driver-side door control module
(N69/1) |
Replace N69/1 |
|
Switch illumination, circuit 58d,
wiring
(short circuit) |
Wiring. |
|
Low voltage |
DM,
B&A, Vol. 2.1, section 7.1,
23 |
|
Excess Voltage |
DM,
B&A, Vol. 2.1, section 7.1,
23 |
 |
Steering column up/down switch (S91/2s11)
or Steering column in/out switch (S91/2s12) stuck/binding, or wiring
short circuit |
13 |
 |
Faulty signal from mirror postion
memory (M21/6n1) (up/down) to left outside rearview mirror (M21/6) |
13 |
|
Faulty signal from mirror postion
memory (M21/6n1) (right/left) to left outside rearview mirror (M21/6) |
13 |
 |
Wiring or motor
Mirror-Horizontal adjustment motor (M21/6m2)
(short circuit) |
See WIS document: AD88.79-P-6000-06A |
|
Wiring or motor
Mirror-Vertical adjustment motor (M21/6m1)
(short circuit) |
See WIS document: AD88.79-P-6000-03A |
|
Wiring or motors
Mirror-adjustment motor (M21/6m1, M21/6m2)
(short circuit) |
See WIS document: AD88.79-P-6000-03A
See WIS document: AD88.79-P-6000-06A |
|
Mirror heater (M21/6r1)
(short circuit)
Front driver-side door control module (N69/1) |
See WIS document: AD88.79-P-6000-13A |
|
Front passenger-side door control
module (N69/2) |
Replace N69/2 |
|
Switch illumination, circuit 58d,
wiring
(short circuit) |
Wiring. |
|
Low voltage |
DM,
B&A, Vol. 2.1, section 7.1, >23 |
|
Excess Voltage |
DM,
B&A, Vol. 2.1, section 7.1, >23 |
|
Steering column up/down switch (S91/2s11)
or Steering column in/out switch (S91/2s12) stuck/binding, or wiring
(short circuit) |
13 |
|
Faulty signal from mirror postion
memory (M21/7n1) (up/down) to right outside rearview mirror (M21/7) |
13 |
|
Faulty signal from mirror postion
memory (M21/7n1) (right/left) to right outside rearview mirror (M21/7) |
13 |
|
Wiring or motor
Mirror-Horizontal adjustment motor (M21/7m2)
(short circuit) |
See WIS document: AD88.79-P-6000-12A |
|
Wiring or motor
Mirror-Vertical adjustment motor (M21/7m1)
(short circuit) |
See WIS document: AD88.79-P-6000-09A |
|
Wiring or motors
Mirror-adjustment motor (M21/7m1, M21/7m2)
(short circuit) |
See WIS document: AD88.79-P-6000-09A
See WIS document: AD88.79-P-6000-12A |
|
Mirror heater (M21/7r1)
(short circuit)
Front passenger-side door control module (N69/2) |
See WIS document: AD88.79-P-6000-14A |
|
Left front ESA control module (with
memory) (N32/1) |
Replace N32/1 |
(model 210 up to 6/98) |
ESC motor (M20), voltage supply,
-
(short to grnd) |
13 |
(model 210 up to 6/98) |
Tilt adjustment motor (M20m2) (up/down),
-
(short to grnd), -//- (open circuit) |
13
|
(model 210 up to 6/98) |
Tilt adjustment motor (M20m2) (up/down),
+
(short circuit to positive) |
13
|
(model 210 up to 6/98) |
Telescopic adjustment motor (M20m1)
(in/out), -
(short to grnd), -//- (open circuit) |
13 |
(model 210 up to 6/98) |
Telescopic adjustment motor (M20m1)
(in/out), +
(short circuit to positive) |
13 |
(model 210 up to 6/98) |
Steering wheel Hall sensor for:
Tilt adjustment motor (up/down) (M20m2) |
13 |
(model 210 up to 6/98) |
Steering wheel Hall sensor for:
Telescopic adjustment motor (in/out)(M20m1) |
13 |
|
Right front ESA control module (with
memory) (N32/2) |
Replace N32/2 |
Printable
version
