WIRING HARNESSES

WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL

GENERAL DESCRIPTION

16.

WIRING HARNESSES

External Wiring Harness (Figure 17)

WTEC III uses three external wiring harnesses to provide a connection between the ECU, the

transmission (including engine, turbine, and output speed sensors), the throttle position sensor, the

vehicle interface module (VIM), retarder control module, shift selectors, diagnostic tool connector,

retarder, retarder temperature sensor, accumulator, and vehicle interface. Many harnesses will include

a bulkhead fitting to separate cab and chassis components. Also, many different styles and materials

for harnesses are likely to be encountered.