my 2012 edge Posted August 6, 2022 Report Share Posted August 6, 2022 I had a very soft pedal. I changed master cylinder and bleed brakes it's better but not good. My son come over with scanner a day code COO2O-13 came on any one familiar with this Quote Link to comment Share on other sites More sharing options...
Haz Posted August 6, 2022 Report Share Posted August 6, 2022 The following diagnostic routine relating to DTC C0020:13 is from the 2012 Edge Workshop Manual: Pinpoint Tests Pinpoint Test A: DTCs C0020:13, C0020:71 Refer to Wiring Diagrams Cell 42, Vehicle Dynamic Systems for schematic and connector information. Normal Operation The ABS module uses an internal solid state switch to operate the ABS pump motor. The ABS module tests the ABS pump motor by activating it for 30 milliseconds. While the pump motor is being activated, the ABS module monitors the voltage drop across the ABS pump motor solid state switch and the amount of current the ABS pump motor draws through the solid state switch. If the voltage drop is too high or if the ABS pump motor is drawing too much current, the ABS module sets a DTC. After 30 milliseconds have passed, the ABS module stops applying voltage to the pump motor and observes the voltage that the spinning ABS pump motor is generating. The voltage generated by the motor indicates how fast the motor is spinning. Voltage that is too low indicates the motor is not spinning freely and a DTC sets. Fused battery voltage from Battery Junction Box (BJB) fuse 5 (40A) is used by the ABS module to power the ABS pump motor. The ABS module provides ground for the ABS pump motor. Insufficient power or ground along these circuits causes multiple DTCs to set. C0020:13 (ABS Pump Motor Control: Circuit Open) — this DTC sets if the voltage supplied to the ABS module is less than 10 volts, if there is an open or high resistance on the ABS pump motor circuit between the ABS module and the Hydraulic Control Unit (HCU) , or if the ABS module is faulted internally. C0020:71 (ABS Pump Motor Control: Actuator Stuck) — this DTC sets if the ABS module detects the ABS pump motor is not rotating when it is commanded to run. This pinpoint test is intended to diagnose the following: Fuse Wiring, terminals or connectors HCU ABS module PINPOINT TEST A : DTCS C0020:13 AND C0020:71 NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to Section 414-01. A1 CHECK THE PUMP MOTOR (PMP_MOTOR) ACTIVE COMMAND Connect the scan tool. Ignition ON. Enter the following diagnostic mode on the scan tool: DataLogger — ABS Module . Toggle the PMP_MOTOR active command ON. Listen for the ABS pump motor noise, does the ABS pump motor run for approximately 2 seconds? Yes GO to A2. No TOGGLE the PMP_MOTOR active command OFF. GO to A3. A2 CHECK FOR FAULT REPEATABILITY Clear the ABS module DTCs. Drive the vehicle at speeds greater than 20 km/h (12 mph). Bring the vehicle to a safe stop. Enter the following diagnostic mode on the scan tool: Self-Test — ABS Module . Are DTCs C0020:13 or C0020:71 retrieved? Yes GO to A3. No If any other DTCs are present, REFER to the ABS Module DTC Chart in this section. If no DTCs are present, the system is operating correctly at this time. A3 CHECK THE ABS MODULE GROUND EYELET AT THE CHASSIS Ignition OFF. Remove the bolt retaining G103 near the battery. Clean the body mating surface and ground eyelets. Install the ground eyelet to the chassis with the retaining bolt. Ignition ON. Enter the following diagnostic mode on the scan tool: Self-Test — ABS Module . Is the concern still present? Yes GO to A4. No The concern was caused by a loose or corroded connector. CLEAR the DTCs. REPEAT self-test. A4 CHECK THE PUMP MOTOR VOLTAGE SUPPLY TO THE ABS MODULE Ignition OFF. Disconnect: ABS Module C135 . Measure the voltage between ABS module C135-1, circuit SBB05 (GY/RD), harness side and ground. Is the voltage greater than 10 volts? Yes GO to A5. No VERIFY that BJB fuse 5 (40A) is OK. If OK, REPAIR circuit SBB05 (GY/RD). If not OK, REFER to the Wiring Diagrams manual to identify the cause of the circuit short. CLEAR the DTCs and REPEAT the self-test. A5 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Battery Negative Cable . Measure the resistance between ABS module C135-16, circuit GD121 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes GO to A6. No REPAIR circuit GD121 (BK/YE) for an open circuit. CLEAR the DTCs. REPEAT the self-test. A6 CHECK FOR CORRECT ABS MODULE OPERATION Connect: Battery Negative Cable . Check ABS module C135 for: corrosion pushed-out pins spread terminals Connect: ABS Module C135 . Make sure the connector is seated correctly, then operate the system and verify the concern is still present. Is the concern still present? Yes For vehicles without adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. TEST the system for normal operation. For vehicles with adaptive cruise control, INSTALL a new HCU . REFER to Hydraulic Control Unit (HCU) in this section. 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. PDF download links to supporting 2012 Edge Workshop Manual documents... Vehicle Dynamics Wiring Diagram - 2012 Edge Workshop Manual.pdf Anti-Lock Brake System (ABS) Module - Wiring Diagram 1 with BJB Fuses Identified - 2012 Edge Workshop Manual.pdf Anti-Lock Brake System (ABS) Module - Wiring Diagram 2 with BJB Fuses Identified - 2012 Edge Workshop Manual.pdf Anti-Lock Brake System (ABS) Module - Connector C135 Details - 2012 Edge Workshop Manual.pdf G103 ABS Ground Circuit Location - 2012 Edge Workshop Manual.pdf Battery Junction Box Illustration - 2012 Edge Workshop Manual.pdf Battery Junction Box Details - 2012 Edge Workshop Manual.pdf Good luck! 2 Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted August 17, 2022 Report Share Posted August 17, 2022 "The DTC sets in continuous memory and on-demand if the voltage supplied to the ABS module is less than 10 volts, if there is an open or high resistance on the ABS pump motor circuit between the ABS module and the HCU , or if the ABS module is faulted internally." I had a simular issue, finally traced it to the pins on the rear brakes not allowing the rears to apply properly. After they froze, the majority of the braking force was taken by the front pads. Very soft pedal. Also low pedal. Quote Link to comment Share on other sites More sharing options...
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