DTC 85

DTC 85 Low Voltage






Circuit Description

The EBTCM, requires a certain minimum voltage to operate properly. It monitors the ignition feed circuit to determine if voltage falls below 9.0 V at which point the code will set.

Test Description

Number(s) below refer to circled number(s) on the diagnostic chart.

1. Checks that fuse A1 feeding the EBTCM ignition circuit is good and for a short in CKT 141.
2. Checks for the appropriate voltage to the EBTCM from CKT 141 and through CKT 51. This checks both power in and the grounds together.
3. Checks EBTCM connector terminals for damage or misalignment.
4. Checks EBTCM connector for good retention to EBTCM when installed.
5. Checks for DTC reset after other portions of the system have tested as OK.
6. Determines if a malfunction found in Step 2 is due to an open or poor connection in the EBTCM ignition feed CKT 141 or poor ground(s) in CKT 51.

Diagnostic Aids

It is very important that a thorough inspection of the wiring and connectors be performed especially the grounds.