WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL GENERAL DESCRIPTION B. Internal Wiring Harness (Figure 1–10) The internal wiring harness provides connection between the external harness, the pulse width modulated solenoids, oil level sensor, C3 pressure switch, and the temperature sensor.
C2 SOLENOID (B) OIL LEVEL SENSOR (HD/B 500) C1 SOLENOID (A) LU SOLENOID (F) TURBINE SPEED SENSOR (MD/B 300/B 400 Omitted in HD/B 500) C3 PRESSURE SWITCH DEUTSCH FEEDTHROUGH HARNESS CONNECTOR STANDOFF (HD and MD are different heights) OIL LEVEL SENSOR (MD/B 300/B 400) C4 SOLENOID (D) LO SIGNAL SOLENOID (N) (MD 3070 & HD 4070) FORWARD SOLENOID (G) TEMPERATURE SENSOR – TRANSID 1 C6 SOLENOID (J) (MD 3070 & HD 4070) C5 SOLENOID (E) C3 SOLENOID (C) TEMPERATURE SENSOR – TRANSID 2 V04841.01 Figure 1–10. WTEC III Internal Wiring Harness 1–8.
VEHICLE INTERFACE MODULE (Figure 1–11) The vehicle interface module (VIM) provides relays, fuses, and connection points for interface with the output side of the vehicle electrical system. VIMs are available for both 12V and 24V electrical systems. The VIM for 12V systems uses all 12V relays. The VIM for 24V systems has all 24V relays. Refer to the Parts Catalog for the transmission assembly number that you are servicing for detailed parts information. Refer to Pages D–30 and D–31 for VIM wire number and terminal information. Some OEMs may provide their own equivalent for the VIM which performs the same functions as the VIM shown in Figure 1–11. V00631.02 Figure 1–11.
Vehicle Interface Module (VIM) Copyright © 2001 General Motors Corp.