Pinpoint Test A: The Clock Operation Is Erratic/Inoperative
CAUTION:
Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
- A1 CHECK CIRCUIT 1111 (VT) FOR AN OPEN
- Key in OFF position.
- Disconnect: Clock C2016
- Measure the voltage between the clock C2016-6, circuit 1111 (VT), harness side and ground.
- Is the voltage greater than 10 volts?
- YES : Go to A2.
- NO : VERIFY the SJB fuse 11 (5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
- A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Measure the resistance between the clock C2016-3, circuit 1205 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- YES : INSTALL a new clock. REFER to Clock in this article. TEST the system for normal operation.
- NO : REPAIR the circuit. TEST the system for normal operation.