Inspection and Verification
NOTE:
The stability assist module must be reconfigured upon replacement; refer to MODULE CONFIGURATION
.
- Verify the customer's concern by operating the vehicle to duplicate the condition.
- Verify the stoplamps operate correctly by depressing and releasing the brake pedal with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to EXTERIOR LIGHTING . If the stoplamps operate correctly, proceed to the next step.
- Verify the PRNDL operates correctly on the instrument cluster. If the PRNDL does not operate correctly, refer to INSTRUMENT CLUSTER . If the PRNDL operates correctly, proceed to the next step.
- Inspect to determine if one of the following mechanical or electrical concerns apply:VISUAL INSPECTION
Mechanical Electrical - Anti-lock brake sensor indicator.
- HCU.
- Incorrectly inflated tires.
- Mismatched wheels or tires on vehicle.
- Base brake concern.
- Brake booster vacuum hose.
- Ford specified steering components, suspension components and tire size.
- Steering wheel rotation ring.
- Battery junction box (BJB) Fuse:
- 101 (40A)
- 102 (40A)
- Central junction box (CJB) Fuse:
- 10 (15A)
- Stability assist module.
- EVAC and fill connector.
- Anti-lock brake sensor.
- Stability assist/traction control switch.
- BPP switch.
- Steering wheel rotation sensor.
- Brake booster solenoid.
- Brake booster release switch.
- Yaw rate sensor.
- Lateral accelerometer.
- Wiring harness.
- Connectors or connections.
- Circuitry.
- If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel, and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- Check that the program card is correctly installed.
- Check the connection of the data link connector to the vehicle.
- Check that the ignition switch is in the RUN position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
- Carry out the DATA LINK DIAGNOSTIC TEST. If diagnostic tool responds with:
- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE COMMUNICATIONS NETWORK .
- NO RESP/NOT EQUIP for stability assist module, Go To PINPOINT TEST A: NO COMMUNICATION WITH THE STABILITY ASSIST MODULE .
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the stability assist module.
- If the DTCs retrieved are related to the concern, go to STABILITY ASSIST MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX to continue diagnostics.
- If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART to continue diagnostics.