Test 13C - Bus Short To 5 Volts
- Turn ignition off. Using external ohmmeter, measure resistance between Automatic Temperature Control (ATC) head connector, terminals C8 (Brown/White wire) and C10 (Violet/Brown wire). If resistance is less than 5 ohms, repair short between Brown/White wire and Violet/Brown wire. If resistance is 5 ohms or greater, go to next step.
- Measure resistance between ATC connector, terminals C8 (Brown/White wire) and C11 (White/Black wire). If resistance is less than 5 ohms, repair short between Brown/White wire and White/Black wire. If resistance is 5 ohms or greater, replace ATC head.
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION
and WIRING DIAGRAM
. After each repair, perform VERIFICATION TEST VER-1.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.