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Home >> Chevrolet >> 2008 >> Optra LS, Automatic >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Electrical Component Locations >> Wiring Systems And Power Management - Door, Luggage Compartment. Underbody & Electrical Center Component Views, & Component Connector End Views >> Component Connector End Views >> Transmission Control Module (TCM) A Connector (MLQ)
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Transmission Control Module (TCM) A Connector (MLQ)

Fig 1: Transmission Control Module (TCM) A Connector End View (MLQ)
GM1481278Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM) A Connector Terminal Identification (MLQ)

Pin Wire Circuit Function
1 0.5 BK/WH 51 Ground
2 0.5 YE/BK 1227 Low Reference
3 - - Not Used
4 0.5 RD 1226 Pressure Control Solenoid Control
5 0.5 D-BU 1225 Torque Converter Clutch Solenoid Control
6 0.5 PK 839 Ignition 1 Voltage
7 0.5 YE 710 CAN Serial Data Low
8-10 - - Not Used
11 0.5 PU 898 Transmission Fluid Temperature Sensor Signal
12 0.5 OG/BK 586 Transmission Fluid Temperature Sensor Signal - Low Reference
13 - - Not Used
14 0.5 PK 1224 Timing Valve Control
15 0.5 YE/BK 1223 Shift Solenoid 2 Valve Control
16 0.5 L-GN 1222 Shift Solenoid 1 Valve Control
17 0.5 PU 1807 CAN Serial Data High
18-22 - - Not Used
23 0.5 BK/WH 51 Ground
24 0.5 OG 440 Battery Positive Voltage
Connector Part Information 
  • OEM: AMP 1318756-1 A
  • Description: 24-Way F 025/090 SER 24POS Plug Assembly (WH)