WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL GENERAL DESCRIPTION ELECTRONIC CONTROL UNIT (ECU) VEHICLE (V) HARNESS TRANSMISSION (T) HARNESS BLA BLA CK CK GRA GRA Y BLUE BLUE BLUE BLUE CONNECTOR (BLUE) CONNECTOR (GRAY) TPS CONNECTOR (OPTIONAL) SELECTOR (S) HARNESS CONNECTOR (BLACK) VEHICLE INTERFACE MODULE (VIM) VIW CONNECTOR PRO-LINK ® DIAGNOSTIC TOOL J 38538-D DIAGNOSTIC DATA READER (DDR) CONNECTOR J 1939 CONNECTOR (OPTIONAL) SCI (J 1587) CONNECTOR (OPTIONAL) RETARDER ACCUMULATOR CONNECTOR VIM CONNECTOR COMPACT PUSHBUTTON SELECTOR TRANSFER CASE CONNECTOR (MD 3070) VIW CONNECTOR R MODE MODE N D RETARDER CONNECTOR (MD/B 300/B 400) PRE-TRANSID & TID 1 DEUTSCH DDR CONNECTOR (OPTIONAL) SENSOR HARNESS CONNECTOR (OPTIONAL) REMOTE LEVER SELECTOR OUTPUT SPEED SENSOR CONNECTOR RETARDER MODULATION REQUEST (RMR) CONNECTOR RETARDER TEMP.
SENSOR CONNECTOR (MD/B 300/B 400 HD/B 500) TID 2 SHIFT SELECTOR CONNECTOR THROTTLE POSITION SENSOR (TPS) CONNECTOR RMR CONNECTOR (OPTIONAL) TURBINE SPEED SENSOR CONNECTOR (HD/B 500) ENGINE SPEED SENSOR CONNECTOR REMOTE PUSHBUTTON SELECTOR THROTTLE POSITION SENSOR (TPS) SELECT R N MODE RETARDER “H” SOLENOID CONNECTOR (HD/B 500) D Bulkhead Connector (Optional) STRIP PUSHBUTTON SHIFT SELECTORS (EUROPEAN OEM) RETARDER “H” SOLENOID CONNECTOR (MD/B 300/B 400) TID 2 RETARDER TEMPERATURE SENSOR CONNECTOR (HD/B 500) PRE-TRANSID & TID 1 R N D R 3 2 1 TRANSMISSION FEEDTHROUGH HARNESS CONNECTOR N D NOTE: Illustration is not to scale. Actual harness configuration may differ from this illustration. .
Figure 1–2. WTEC III Electronic Control Components V07073 Copyright © 2001 General Motors Corp.