CMTC Test 5A - Incorrect Mileage Or Distance Problems
NOTE:
Perform CMTC TEST 1A
before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATION
and WIRING DIAGRAMS
. Drive vehicle at least 3 miles at greater than 25 MPH to update CMTC and perform TEST VER-1A - VERIFICATION PROCEDURE
after each repair.
NOTE:
For CMTC wiring diagram, see INSTRUMENT PANEL article in the ACCESSORIES & ELECTRICAL section.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector.
- Turn ignition on. Using scan tool, read engine information under monitor display. If scan tool displays NO RESPONSE, see VEHICLE COMMUNICATIONS TESTS . If scan tool does not display NO RESPONSE, go to next step.
- Observe TP sensor while depressing accelerator pedal. If TP sensor percent does not increase while operating throttle, see TESTS W/CODES article in the ENGINE PERFORMANCE section. If TP sensor percent does increase, go to next step.
- Raise and support vehicle. Start vehicle and place transmission in Drive. Using scan tool, read vehicle speed signal. Increase vehicle speed and observe scan tool. If speed signal changes, system is currently operating correctly. If speed signal does not change, vehicle speed signal may be at fault. See TESTS W/CODES article in the ENGINE PERFORMANCE section.