E

Pinpoint Test E: Yellow Rear ABS Warning Light Self Check OK, But No Diagnostic Trouble Code When Diagnostics Are Started:

DESCRIPTION

The yellow RABS warning light should automatically begin a flash-out sequence if the diagnostic connector is shorted to ground for at least one second. This flashout sequence can be observed by watching the yellow REAR ABS warning light. There are a few conditions that will prevent the flashout from occurring. These must be resolved before continuing the service.

POSSIBLE CONTRIBUTING BASE BRAKE COMPONENT/VEHICLE WIRING CONCERNS

- Burned-out brake rear lights
- Missing anti-lock electronic control module power (Circuit 601 [LB/PK] and associated fuse)
- Shorted yellow rear ABS warning light circuit (Circuit 603 [DG])
- Incorrect anti-lock electronic control module (RABS I vs. RABS II).

CAUTION: RABS I vehicles that have been upgraded with RABS II anti-lock electronic control module will not have Keep-Alive Memory and will not be able to store codes when the vehicle is turned "OFF".

NOTE: A RABS I system that has previously been serviced might have had its anti-lock electronic control module upgraded to a RABS II. In the event that you are uncertain whether you have a RABS I or RABS II anti-lock electronic control module, check the anti-lock electronic control module part number to be certain of the type of system you have.

- Part number F3TF-2C018: RABS II anti-lock electronic control module
- Part number F3UF-2C018: RABS II anti-lock electronic control module
- All other part numbers are RABS I anti-lock electronic control module.