C1086

C1086-ABS SYSTEM CONTROL TOO LONG

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
With the ignition on.

- Set Condition:
When the Anti-Lock Brake System (ABS) Module receives five seconds of dump activation without wheel speed recovery.





1. CHECK FOR ACTIVE DTC

NOTE: Repair all other DTCs first.

NOTE: If other DTCs are set they must be repaired before continuing. This DTC must be active for the results of this test to be valid and this DTC may set while driving under excessive driving conditions.

1. Ignition on, engine not running.
2. With the scan tool, record and erase DTCs.
3. Press and release the brake pedal.
4. With the scan tool, read and record DTCs.

Does the scan tool display: C1086-ABS SYSTEM CONTROL TOO LONG?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION diagnostic procedure. ABS Intermittent Condition Test.

2. CHECK FOR AIR IN BRAKE SYSTEM AND WORN MECHANICAL COMPONENTS

NOTE: Visually inspect for worn brake linings, undersized rotors, binding or frozen calipers. Repair as necessary.

NOTE: Before continuing the brake system must be bled to verify there is no air in the brake system.

Were any problems found?

Yes

- Repair as necessary.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Replace the Hydraulic Control Unit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.