CMTC Test 6A - CMTC Button Problems
NOTE:
Perform CMTC TEST 1A
before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION
. For wiring diagrams, refer to WIRING DIAGRAMS
. After each repair, perform TEST VER-1A
.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
- Turn ignition off. Access CMTC button assembly. Using external ohmmeter, backprobe button assembly connector. See Fig 1 . Measure resistance between ground and terminal No. 2. If resistance is less than 5 ohms, replace button assembly. If resistance is 5 ohms or more, go to next step.
- With ohmmeter still connected, press and hold STEP button. If resistance is 5 ohms or more, replace button assembly. If resistance is less than 5 ohms, go to next step.
- Move ohmmeter lead to terminal No. 3 on button assembly connector. If resistance is less than 5 ohms, replace button assembly. If resistance is 5 ohms or more, go to next step.
- With ohmmeter still connected, press and hold US/M button. If resistance is 5 ohms or more, replace button assembly. If resistance is less than 5 ohms, replace CMTC module.