Automatic transmission wiring diagram Audi 100 C4
Legend:
* Automatic transmission: Automatic gearbox
* B: Automatic transmission control unit
* BSM: Powertrain control unit (DME)
* DPKV: Crankshaft position sensor
* DPRV: Camshaft position sensor
*DF: Fuel pressure sensor
* DRM: Air flow sensor
* DT: Temperature sensor
* EBN: Electric fuel pump
*E: Shift position indicator
* GI: Torque converter
* K: Valve
* CT: Limit switch
* M: Motor
*U: Unspecified component
*R: Relay
Scheme:
IN:
* Output G (Output for pressure modulation and gear shift position)
* Output F (Output for gear shift 1/2, 2/3)
* Output E (Output for 3/4 gear shift)
* Output D (Output for neutral switching)
* Output C (Output for parking activation)
* Output B (Output for controlling clutch solenoids)
* Output A (Output for gear shift position indicator)
BSM:
* Input for DPKV signal
* Input for DPRV signal
* Input for DF signal
* DRM signal input
* Input for DT signal (coolant temperature)
Automatic:
* Shift solenoid valve 1/2
* Shift solenoid valve 2/3
* 3/4 shift solenoid valve
* Neutral solenoid valve
* Parking activation solenoid valve
* Gear selector position sensor
* Input shaft speed sensor
*Output shaft speed sensor
GI:
* Turbine shaft speed sensor (on some models)
N:
* Torque converter lockup sensor
E:
* LED indicators for gear shift position (P, R, N, D, 2, 1)
CT:
* Limit switch for position “P” (parking)
* Limit switch for position “N” (neutral)
M:
* Gear shift motor
R:
* Automatic transmission power relay
Connection:
* Output G (automatic transmission) -> Speed signal input (BSM)
* Output G (automatic transmission) -> Input for controlling the torque converter lock-up valve (TCV)
* Output G (automatic transmission) -> Input for controlling the pressure control valve (PCV)
* Output F (automatic transmission) -> Input for gear shift signal 1/2 (BSM)
* Output E (automatic transmission) -> Gear shift signal input 2/3 (BSM)
* Output D (automatic transmission) -> Input for neutral signal (BSM)
* Output C (automatic transmission) -> Input for parking signal (BSM)
* Input for signal DPKV (BSM) -> DPKV
* Input for signal DPRV (BSM) -> DPRV
* Input for signal DF (BSM) -> DF
* Input for signal DRM (BSM) -> DRM
* Input for signal DT (BSM) -> DT
* Output G (automatic transmission) -> Turbine shaft speed sensor (if equipped)
* Output G (automatic transmission) -> Torque converter lockup sensor
* Output G (automatic transmission) -> Pressure control valve
* Outputs F, E, D, C (automatic transmission) -> Corresponding shift solenoid valves
* Output A (automatic transmission) -> Shift position indicator
* Gear selector position sensor (automatic transmission) -> BSM
* Input shaft speed sensor (automatic transmission) -> BSM
* Output shaft speed sensor (automatic transmission) -> BSM
* Limit switch for position “P” (automatic transmission) -> BSM
* Limit switch for position “N” (automatic transmission) -> BSM
* Gear shift motor (automatic transmission) -> Automatic transmission control circuit
* Automatic transmission power relay (N) -> automatic transmission