Pinpoint Test Q: DTCs C1011:1C, 1F, 67 And C1012:01
Anti-Lock Control - Hybrid
Pinpoint Tests
Pinpoint Test Q: DTCs C1011:1C, 1F, 67 and C1012:01
Refer to Wiring Diagram Set 42 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Vehicle Dynamic Systems for schematic and connector information. Diagrams By Number
Normal Operation
The brake pedal feel simulator cut-off solenoid valve and brake pedal feel simulator cut-off pressure sensor are located within the brake pedal feel simulator, which is attached to the brake pedal assembly. The ABS module will apply a Pulse-Width Modulation (PWM) ground signal to the brake pedal feel simulator cut-off solenoid valve to increase the resistance felt when the driver applies the brake pedal. The ABS module uses input from the brake pedal feel simulator cut-off valve pressure sensor to verify that the brake pedal feel simulator cut-off solenoid valve is functioning properly. If the ABS module detects a fault with a brake system component that would hinder brake-by-wire operation, the module will remove power from the brake pedal feel simulator cut-off valve solenoid, relieving simulator fluid pressure.
The ABS module provides power to the brake pedal feel simulator cut-off valve solenoid along circuit CCB31 (BN/VT). The ABS module provides a PWM ground signal to the solenoid along circuit CCB32 (BU/OG). If either circuit is shorted to ground, shorted to voltage or has high resistance, a DTC will set.
The ABS module provides the brake pedal feel simulator cut-off pressure sensor a 5-volt reference voltage along circuit LCA16 (GN). The brake pedal feel simulator provides a signal voltage proportional to the fluid pressure in the brake pedal feel simulator cut-off device along circuit VCA13 (YE/BU). The ABS module provides a signal return to brake pedal feel simulator cut-off pressure sensor along circuit RCA16 (BU/BN).
Both the brake pedal feel simulator cut-off solenoid valve and brake pedal feel simulator cut-off pressure sensor are internal to the brake pedal feel simulator and cannot be serviced separately. If a new brake pedal feel simulator is needed, a new brake pedal assembly must be installed.
C1011:1C-C1012:01:
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Brake pedal feel simulator cut-off pressure sensor
- Brake pedal feel simulator valve solenoid
- ABS module
PINPOINT TEST Q: DTCs C1011:1C, 1F, 67 AND C1012:01
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
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Q1 CHECK THE DTCs FROM THE ABS MODULE SELF-TEST
- Review the DTCs retrieved and recorded during Inspection and Verification.
- Is DTC C1011:1C, 1F 67 or C1012:01 present?
Yes
If DTCs C1011:1C, 1F or 67 are present, GO to Q2.
If DTC C1012:01 is present, GO to Q6.
No
For all other ABS module DTCs, REFER to the ABS Module DTC Chart. [1][2]Diagnostic Trouble Code Descriptions
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Q2 CHECK THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF PRESSURE SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: Brake Pedal Feel Simulator Cut-Off Pressure Sensor C2405.
- Disconnect: ABS Module C155.
- Measure the resistance between ground and:
- brake pedal feel simulator cut-off pressure sensor C2405-1, circuit RCA16 (BU/BN), harness side.
- brake pedal feel simulator cut-off pressure sensor C2405-2, circuit VCA13 (YE/BU), harness side.
- brake pedal feel simulator cut-off pressure sensor C2405-3, circuit LCA16 (GN), harness side.
- Is the resistance greater than 10,000 ohms?
Yes
GO to Q3.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
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Q3 CHECK THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF PRESSURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between ground and:
- brake pedal feel simulator cut-off pressure sensor C2405-1, circuit RCA16 (BU/BN), harness side.
- brake pedal feel simulator cut-off pressure sensor C2405-2, circuit VCA13 (YE/BU), harness side.
- brake pedal feel simulator cut-off pressure sensor C2405-3, circuit LCA16 (GN), harness side.
- Is any voltage present?
Yes
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
No
GO to Q4.
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Q4 CHECK THE BRAKE FLUID PRESSURE SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between the ABS module, harness side and the brake pedal feel simulator cut-off pressure sensor, harness side as indicated in the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to Q5.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
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Q5 CHECK THE ABS MODULE OUTPUT
- Connect: ABS Module C155.
- Ignition ON.
- Measure the voltage between brake pedal feel simulator cut-off pressure sensor C2405-1, circuit LCA16 (GN), harness side and brake pedal feel simulator cut-off pressure sensor C2405-3, circuit RCA16 (BU/BN), harness side.
- Is approximately 5 volts present?
Yes
INSTALL a new brake pedal and bracket assembly. CLEAR the DTCs. REPEAT the self-test.
No
GO to Q10.
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Q6 CHECK THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF VALVE SOLENOID CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: Brake Pedal Feel Simulator Cut-Off Valve Solenoid C2406.
- Disconnect: ABS Module C155.
- Measure the resistance between ground and:
- brake pedal feel simulator cut-off valve solenoid C2406-1, circuit CCB31 (BN/VT), harness side.
- brake pedal feel simulator cut-off valve solenoid C2406-2, circuit CCB32 (BU/OG), harness side.
- Is the resistance greater than 10,000 ohms?
Yes
GO to Q7.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
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Q7 CHECK THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF VALVE SOLENOID CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between ground and:
- brake pedal feel simulator cut-off valve solenoid C2406-1, circuit CCB31 (BN/VT), harness side.
- brake pedal feel simulator cut-off valve solenoid C2406-2, circuit CCB32 (BU/OG), harness side.
- Is any voltage present?
Yes
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
No
GO to Q8.
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Q8 CHECK THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF VALVE SOLENOID CIRCUITS FOR AN OPEN
- Ignition OFF.
- Measure the resistance between the ABS module, harness side and the brake pedal feel simulator cut-off valve solenoid, harness side as indicated in the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to Q9.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
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Q9 ISOLATE THE BRAKE PEDAL FEEL SIMULATOR CUT-OFF VALVE SOLENOID
- Measure the resistance between brake pedal feel simulator cut-off valve solenoid C2406-1, circuit CCB31 (BN/VT), component side and pedal feel simulator cut-off valve solenoid C2406-2, circuit CCB32 (BU/OG), component side.
- Is the resistance between 18 and 20 ohms?
Yes
GO to Q10.
No
INSTALL a new brake pedal assembly.
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Q10 CHECK FOR CORRECT ABS MODULE OPERATION
- Check the ABS module connector for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect the ABS module connections and make sure it is seated 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 Service and Repair. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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