Pinpoint Test O: The Stability Assist Cannot Be Disabled
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.
- O1 CHECK THE STABILITY ASSIST SWITCH
- Key in OFF position.
- Disconnect: Stability Assist Switch C280.
- Turn the stability assist switch to the OFF position.
- Measure the resistance between the stability assist switch C280-1, circuit 1003 (GY/YE), component side and C280-2, circuit 959 (GY).
- Is the resistance greater than 10,000 ohms?
Yes
GO to O2.
No
INSTALL a new stability assist switch. REFER to TRACTION CONTROL SWITCH . TEST the system for normal operation.
- O2 CHECK CIRCUIT 959 (GY) FOR A SHORT TO POWER
- Key in OFF position.
- Disconnect: ABS Module C155.
- Key in ON position.
- Measure the voltage between the ABS module C155-38, circuit 959 (GY), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit. REPEAT the self-test.
No
GO to O3.
- O3 CHECK CIRCUIT 960 (BK/LB) FOR SHORT TO GROUND
- Key in OFF position.
- Measure the resistance between the ABS module C155-13, circuit 960 (BK/LB), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to O4.
No
REPAIR the circuit. TEST the system for normal operation.
- O4 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect all ABS connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all ABS connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new ABS module. refer to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self -test.