EBTCM-Switched Faults

NOTE: The J 39700 Universal Breakout Box is connected both to the ABS/TCS wiring harness and the EBTCM during many diagnostic chart tests. The EBTCM provides power or ground on many circuits only when it is powered up and operational.

If a diagnostic test indicates a short to system voltage or ground, turn the ignition off and disconnect J 39700 from the EBTCM. Leave it connected to the harness. Repeat the test which indicated the short (turning the ignition on if the test directs you to do so). If the short is now not present, it is likely that the short is to a circuit from the EBTCM when the EBTCM is operating. Inspect the wiring harness and connectors to determine the location of the problem, then repair the short condition as needed. Examples of EBTCM-switched power and ground circuits are:

Powers

851, 854 1715

Grounds

833, 852, 873, 874, 879, 883, 884, 1676, 1714

If the above process does not show the fault as EBTCM-switched, the short is likely located in circuits other than those mentioned above. If continued diagnostics are necessary after this process, always turn ignition off and reconnect the J 39700 to the EBTCM again before continuing the chart, unless specifically directed otherwise.