Test 14A - No Response From Compass Mini-Trip Computer (CMTC)
NOTE:
For connector terminal identification see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
. Perform, after each repair, VERIFICATION TEST VER-1A - VERIFICATION PROCEDURE
.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.
- Remove and inspect fuse No. 11 from junction block. Junction block is on left side of instrument panel. If fuse is open, go TEST 14B . If fuse is okay, go to next step.
- Reinstall fuse. Disconnect CMTC 12-pin connector. Turn ignition on. Using external voltmeter, measure voltage between ground and terminal No. 1 (Dark Blue/White wire) on CMTC connector. If voltage is less than 9.5 volts, repair open Dark Blue/White wire. If voltage is 9.5 volts or more, go to next step.
- Using external voltmeter, measure voltage between ground and terminal No. 5 (Pink wire) on CMTC connector. If voltage is less than 9.5 volts, repair open Pink wire. If voltage is 9.5 volts or more, go to next step.
- Turn ignition off. Using external ohmmeter, measure resistance between ground and terminal No. 7 (Black/Yellow wire) on CMTC connector. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open Black/Yellow wire.
- Using scan tool, perform CCD bus test. Connect jumper wire between ground and terminal No. 2 (Violet/Brown wire). If scan tool displays BUS (+) SHORTED TO GROUND, go to next step. If scan tool does not display BUS (+) SHORTED TO GROUND, repair open Violet/Brown wire.
- Move jumper wire to terminal No. 8 (White/Black wire). If scan tool displays BUS (+) SHORTED TO GROUND, replace CMTC. If scan tool does not display BUS (+) SHORTED TO GROUND, repair open White/Black wire.