A/T 01V
Electrical/electronic components, locations
1. Automatic transmission Control Module (TCM) -J217
^ Component location see Fig. 1.
^ Removing and installing see Fig. 2.
^ Multi-pin connector release see Fig. 3.
^ Checked via On Board Diagnostic (OBD)
2. Engine Control Module (ECM)
^ Location see Fig. 4.
^ Checked via On Board Diagnostic (OBD)
3. ABS Control Module
^ Location see Fig. 7.
^ Checked via On Board Diagnostic (OBD).
4. Data Link Connector (DLC)
^ Location see Fig. 5.
5. Valve body
^ Location see Fig. 9.
^ Contains the following solenoids and Pressure Control valves: -N88, -N89, -N90, -N215, -N216, -N217, -N218 and -N233
^ Components are checked by OBD
6. Transmission internal wiring harness with integrated Transmission Fluid Temperature Sensor (ATF) -G93
^ Location see Fig. 6.
^ G93 is checked by OBD
7. Multi-function Transmission Range (TR) Switch -F125
^ Location and removing and installing see Fig. 8.
^ Is checked by OBD
8. Sensor for Transmission RPM G182 Location and removing and installing see Fig. 10.
^ Is checked by OBD
9. Sender for Transmission Output RPM-G195
^ Location and removing and installing see Fig. 11.
^ Is checked by OBD
10. Speedometer Vehicle Speed Sensor (VSS) G22
^ Location and removing and installing see Fig. 11.
^ Is checked by OBD
11. Selector lever mechanism
^ Location: in front center console
12. Tiptronic Switch -F189
^ Location and removing and installing see Fig. 14.
^ Can be checked in "Read measuring value block", and by electrical testing.
13. Shift Lock solenoid -N110
^ Location and removing and installing see Fig. 13.
^ Can be checked in "Read measuring value block" and by electrical testing.
14. Throttle Position (TP) Sensor -G69
^ Location: integrated in Throttle Valve Control Module -J338
^ TP Sensor signal is checked by OBD of the ECM
^ TP Sensor signal can only be checked in " Read measuring value block". If A TP Sensor malfunction is detected using OBD program, check OBD program of ECM
15. Cruise Control Switch - E45
^ Location see Fig. 18
16. Starting interlock relay J207
^ Location see Fig. 15.
17. Transmission range selector lever display -Y6
^ Location: in instrument cluster see Fig. 16
^ Transmission range selector lever display that is completely dark indicates "mechanical backup with non-active control module".
^ Transmission range selector lever display that is completely lit up indicates "mechanical backup with non-active control module".
18. Kickdown switch -F8
^ Location: Integrated with pedal mechanism in Throttle Position (TP) sensor-G79 and -G185 for E-Gas
^ When replacing kickdown switch, also replace Throttle Position (TP) sensor G79 and -G185
^ After replacing perform learning routine for kickdown switch shift point.
^ Can be checked in "Read measuring value block". It can also be checked electrically.
19. Brake Light Switch -F
^ Location see Fig. 17.
^ Removing and installing
Refer to Lighting and Horns.
^ Can be checked in "Read measuring value block". It can also be checked electrically
Fig. 1 Location of Automatic Transmission Control Module (TCM) 217
The TCM is located in front of the right seat under the carpet in the foot well.
Removing
Fig. 2 TCM 217, removing and installing
- Remove trim of right -A- column at bottom and right door entry molding of right front door.
- Loosen and fold up carpet at right rocker panel at right front door about 20 cm (8 inch).
- Unclip container at -A- upward.
- Unclip container at -B- as shown.
- Unclip control module from container-arrows
- Disengage multi-pin connector and disconnect from control module see Fig 3.
Installing:
Install in reverse order of removal but note the following:
- Clip nut -1- must be securely fastened.
Fig. 3 Automatic Transmission Control Module (TCM) 217, disconnecting multi-pin connector
- Switch off ignition and wait for about 30 seconds.
- To disengage connector, push clip in direction of arrow.
Installation is in reverse order of removal.
Fig. 4 Engine Control Module (ECM)
Location: in plenum chamber in E-box.
Note: Before replacing the ECM, first read measuring value block 013 and print out or make note of values
ECM, removing and installing
Refer to Powertrain Management.
Fig. 5 Data Link Connector (DLC)
Location: located under knee bar left of steering wheel.
- Connect VAG 1551 scan tool and insert address word "02 Transmission electronics". Advance until "Insert address word XX" is shown on the display, Refer to Scan Tool Testing.
Fig. 6 Transmission internal wiring harness with integrated Transmission Fluid Temperature Sensor -G93
Location: Harness is attached to valve body.
The harness can be replaced with transmission installed.
Transmission internal wiring harness, removing and installing
Refer to Wiring Harness, A/T
Transmission Fluid Temperature Sensor-G93
Location: Sensor is firmly integrated in wiring harness and can only be replaced by replacing harness.
Transmission Fluid Temperature Sensor -G93, replacing
Refer to Sensors and Switches - A/T
Fig. 7 ABS Control Module 104
Location: In engine compartment on left side. It is attached to the hydraulic control unit.
Fig. 8 Multi-function Transmission Range (TR) switch -F125
Location: On left side of transmission
Multi-function Transmission Range (TR) switch -F125, removing and installing
Refer to Switches and Sensors - A/T
Fig. 9 Valve body
Location: Bolted to transmission housing and covered by transmission oil pan.
Attached to the valve body are solenoid valves and pressure regulating valves -N88, -N89, -N90, -N215, -N216, -N217, -N218 and -N233.
Valve body, removing and installing
Refer to Valve Body, A/T
Fig. 10 Sensor for Transmission RPM-G182
Location: On the back side of valve body.
Sensor for Transmission RPM -G182
Fig. 11 Sender for Transmission Output RPM - G195
Location: Screwed into right outside of transfer transmission housing.
Sender for Transmission Output RPM -G195
Fig. 12 Speedometer Vehicle Speed Sensor (VSS) - G22
Location: Installed in mount of left flange shaft.
Speedometer Vehicle Speed Sensor (VSS) -G22
Fig. 13 Shift Lock solenoid -N110
Location: In shift mechanism -arrow-.
Shift Lock Solenoid, removing and installing
Refer to Shift Interlock.
Fig. 14 Tiptronic Transmission Range (TR) Switch - F189
Location: Integrated in printed circuit for the Transmission Range (TR) Selector Lever Display
The switch consists of 3 position sensors (-A-, -B-, -C-) that are triggered by a magnet located on the Transmission Range (TR) Selector Lever Display
A - Sensor for downshift
B - Sensor for Tiptronic recognition
C - Sensor for upshift
- Can be tested in "Reading measuring value block" Refer to Scan Tool Testing.
In case of malfunctions, first check whether solenoid is properly attached to slide -C-, replace slide if necessary. Only replace selector lever display and integrated printed circuit after checking all wiring and connections. For vehicles with Tiptronic steering wheel also check buttons on steering wheel.
Tiptronic TR Switch -F189, removing and installing
Refer to Sensors and Switches - A/T.
Fig. 15 Starting Interlock Relay-J207
Location: Behind 13-position relay panel behind instrument panel on right side.
Connections:
Refer to Shift Interlock.
Storage shelf, driver's side, removing
Refer to Body and Frame.
Fig. 16 Transmission Range (TR) Selector Lever Display -Y6
Location: In instrument cluster
Transmission Range (TR) Selector lever Display, removing and installing
Refer to Instrument Panel, Gauges and Warning Indicators.
Fig. 17 Brake Light Switch -F
Location: Switch -arrow- is located at the foot pedal mechanism.
Brake light switch, removing and installing
Refer to Lighting and Horns.
Fig. 18 Cruise Control Switch -E45
Location: On steering column switch.
Cruise Control Switch -E45, removing and installing:
Refer to Cruise Control.