Instrument cluster multi-pin connector assignments
32-pin multi-connector -T32-, blue
1 - Terminal 15
2 - Brake pad wear indicator
3 - Speedometer output 1
4 - Vacant
5 - Fuel gauge sender
6 - Fuel tank warning (OBD 2)
7 - Terminal 31 (sensor)
8 - Coolant temperature
9 - Terminal 31 (load)
10 - Oil pressure 2 (high)
11 - Engine speed signal
12 - Air conditioner shut-off
13 - Electronic Power Control (EPC)
14 - Convertible top
15 - Terminal 58d
16 - Vacant
17 - High beams
18 - Left turn signal
19 - Vacant
20 - Terminal 58s
21 - Door contact, driver's side
22 - Coolant level low
23 - Terminal 30
24 - Terminal 31 (load)
25 - Fuel consumption signal
26 - Right parking light
27 - Left parking light
28 - Speedometer input
29 - Brake fluid level
30 - S-contact
31 - Speedometer output 2
32 - ESP / ASR (traction control)
32-pin multi-connector, -T32a-, green
1 - Door contact (all doors)*
2 - Transponder 1
3 - Vacant
4 - Vacant
5 - W-wire
6 - Signal from central locking for detecting "door open"
7 - Right turn signal
8 - Vacant
9 - Vacant
10 - Airbag
11 - Standing time output
12 - Terminal 61
13 - Parking brake
14 - Engine check*
15 - Oil level / oil temperature
16 - Vacant
*) Where applicable
17 - Transponder 2
18 - CAN Bus - High + (Powertrain)
19 - CAN Bus - High - (Powertrain)
20 - CAN Bus - High shielding (Powertrain)*
21 - ABS monitor
22 - CAN Bus - Low + (Convenience)*
23 - CAN Bus - Low - (Convenience)*
24 - CAN Bus - Low shielding (Convenience)*
25 - Hood switch
26 - Vacant
27 - Belt buckle
28 - K-wire - Data Link Connector (DLC)
29 - Outside temperature input
30 - Terminal 58de (external dimmer potentiometer)
31 - Gear selector display
32 - Vacant
*) Where applicable
32-pin multi-connector - T32b-, grey
1 - Menu selector switch (menu)
2 - Menu selector switch (output A)
3 - Menu selector switch (output B)
4 - Menu selector switch (enter)
5 - CAN Bus - Low (display)
6 - CAN Bus - Low
7 - CAN Bus - Low
8 - 10 Vacant
11 - Enable signal
12 - Clock signal
13 - Data signal
14 - Brake lights
15 - Washer fluid low
16 - Tail lights / low-beam headlights
17 - On-board computer, left
18 - On-board computer, right
19 - On-board computer, reset
20 - Vacant
21 - Summer/winter switch-over*
22 - Vacant
23 - Switch selector, navigation*
24 - Switch selector, navigation*
25 - 32 Vacant
*) Where applicable