low speed ABS

[Hammer ninja]

2011 Edge limited, when turning to the left and breaking moderately, the ABS kicks in. I have replaced all 4 speed sensors with no change to the problem.  Thanks in advance!

[Haz]

Before replacing the speed sensors, did you scan or have your Edge scanned for Diagnostic Trouble Codes (DTCs) ?

 

The ABS module has an extensive list of DTCs that can be helpful toward pinpointing the cause of false ABS activation.

 

From the 2011 Edge Workshop Manual...

 

 ABS Module DTC Chart

 

DTC	Description	Action
C0001:49	TCS Control Channel "A" Valve 1: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0001:49 returns: 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.
C0002:49	TCS Control Channel "A" Valve 2: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0002:49 returns: 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.
C0003:49	TCS Control Channel "B" Valve 1: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0003:49 returns: 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.
C0004:49	TCS Control Channel "B" Valve 2: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0004:49 returns: 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.
C0010:49	Left Front Inlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0010:49 returns: 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.
C0011:49	Left Front Outlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0011:49 returns: 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.
C0014:49	Right Front Inlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0014:49 returns: 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.
C0015:49	Right Front Outlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0015:49 returns: 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.
C0018:49	Left Rear Inlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0018:49 returns: 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.
C0019:49	Left Rear Outlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C0001:49 returns: 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.
C001C:49	Right Rear Inlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C001C:49 returns: 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.
C001D:49	Right Rear Outlet Control: Internal Electronic Failure	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C001D:49 returns: 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.
C0020:11	ABS Pump Motor Control: Circuit Short To Ground	This DTC indicates that part of the HCU has failed internally. CLEAR the DTCs. TEST DRIVE the vehicle. REPEAT the self-test. If C0020:11 returns, INSTALL a new HCU . REFER to Hydraulic Control Unit (HCU) in this section. TEST the system for normal operation.
C0020:12	ABS Pump Motor Control: Circuit Short To Battery	This DTC indicates that part of the HCU has failed internally. CLEAR the DTCs. TEST DRIVE the vehicle. REPEAT the self-test. If C0020:12 returns, INSTALL a new HCU . REFER to Hydraulic Control Unit (HCU) in this section.
C0020:13	ABS Pump Motor Control: Circuit Open	GO to Pinpoint Test A.
C0020:71	ABS Pump Motor Control: Actuator Stuck	GO to Pinpoint Test A.
C0030:07	Left Front Tone Wheel: Mechanical Failure	GO to Pinpoint Test B.
C0031:01	Left Front Wheel Speed Sensor: General Electrical Failure	GO to Pinpoint Test D.
C0031:19	Left Front Wheel Speed Sensor: Circuit Current Above Threshold	GO to Pinpoint Test D.
C0031:29	Left Front Wheel Speed Sensor: Signal Invalid	GO to Pinpoint Test B.
C0031:2F	Left Front Wheel Speed Sensor: Signal Erratic	GO to Pinpoint Test B.
C0031:64	Left Front Wheel Speed Sensor: Signal Plausibility Failure	GO to Pinpoint Test B.
C0033:07	Right Front Tone Wheel: Mechanical Failure	GO to Pinpoint Test B.
C0034:01	Right Front Wheel Speed Sensor: General Electrical Failure	GO to Pinpoint Test D.
C0034:19	Right Front Wheel Speed Sensor: Circuit Current Above Threshold	GO to Pinpoint Test D.
C0034:29	Right Front Wheel Speed Sensor: Signal Invalid	GO to Pinpoint Test B.
C0034:2F	Right Front Wheel Speed Sensor: Signal Erratic	GO to Pinpoint Test B.
C0034:64	Right Front Wheel Speed Sensor: Signal Plausibility Failure	GO to Pinpoint Test B.
C0036:07	Left Rear Tone Wheel: Mechanical Failure	GO to Pinpoint Test B.
C0037:01	Left Rear Wheel Speed Sensor: General Electrical Failure	GO to Pinpoint Test D.
C0037:19	Left Rear Wheel Speed Sensor: Circuit Current Above Threshold	GO to Pinpoint Test D.
C0037:29	Left Rear Wheel Speed Sensor: Signal Invalid	GO to Pinpoint Test B.
C0037:2F	Left Rear Wheel Speed Sensor: Signal Erratic	GO to Pinpoint Test B.
C0037:64	Left Rear Wheel Speed: Sensor Signal Plausibility Failure	GO to Pinpoint Test B.
C0039:07	Right Rear Tone Wheel: Mechanical Failure	GO to Pinpoint Test B.
C003A:01	Right Rear Wheel Speed Sensor: General Electrical Failure	GO to Pinpoint Test D.
C003A:19	Right Rear Wheel Speed Sensor: Circuit Current Above Threshold	GO to Pinpoint Test D.
C003A:29	Right Rear Wheel Speed Sensor: Signal Invalid	GO to Pinpoint Test B.
C003A:2F	Right Rear Wheel Speed Sensor: Signal Erratic	GO to Pinpoint Test B.
C003A:64	Right Rear Wheel Speed Sensor: Signal Plausibility Failure	GO to Pinpoint Test B.
C0040:64	Brake Pedal Switch "A": Signal Plausibility Failure	GO to Pinpoint Test E.
C0044:28	Brake Pressure Sensor "A": Signal Bias Level Out of Range/Zero Adjustment Failure	GO to Pinpoint Test C.
C0044:49	Brake Pressure Sensor "A": Internal Electronic Failure	GO to Pinpoint Test C.
C0044:64	Brake Pressure Sensor "A": Signal Plausibility Failure	GO to Pinpoint Test C.
C0061:28	Lateral Acceleration Sensor: Signal Bias Level Out of Range/Zero Adjustment Failure	This DTC indicates a concern with the lateral acceleration sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0061:64	Lateral Acceleration Sensor: Signal Plausibility Failure	This DTC indicates a concern with the lateral acceleration sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0062:28	Longitudinal Acceleration Sensor: Signal Bias Level Out of Range/Zero Adjustment Failure	This DTC indicates a concern with the longitudinal acceleration sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0062:64	Longitudinal Acceleration Sensor: Signal Plausibility Failure	This DTC indicates a concern with the longitudinal acceleration sensor which is integral to the Restraints Control Module (RCM) . REFER toSection  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0062:76	Longitudinal Acceleration Sensor: Wrong Mounting Position	This DTC indicates a concern with the longitudinal acceleration sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0063:28	Yaw Rate Sensor: Signal Bias Level Out of Range/Zero Adjustment Failure	This DTC indicates a concern with the yaw rate sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0063:64	Yaw Rate Sensor: Signal Plausibility Failure	This DTC indicates a concern with the yaw rate sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0064:28	Roll Rate Sensor: Signal Bias Level Out of Range/Zero Adjustment Failure	This DTC indicates a concern with the roll rate sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C0064:64	Roll Rate Sensor: Signal Plausibility Failure	This DTC indicates a concern with the roll rate sensor which is integral to the Restraints Control Module (RCM) . REFER to Section  501-20B to diagnose all the RCM DTCs. If no RCM DTCs are present, GO to Pinpoint Test K.
C1B00:29	Steering Angle Sensor: Signal Invalid	This DTC sets when the ABS module receives invalid data from the SCCM regarding the steering wheel angle sensor input. RETRIEVE and REPAIR all non-network DTCs in the SCCM . REFER to Section  211-05.
C1B00:41	Steering Angle Sensor: General Checksum Failure	The ABS module receives the steering wheel angle sensor information from the SCCM over the HS-CAN . CARRY OUT a self-test of the SCCM . REFER to Diagnosis and Testing in Section Section  211-05 to diagnose the DTCs retrieved.
C1B00:64	Steering Angle Sensor: Signal Plausibility Failure	This DTC sets when the ABS module receives invalid data from the SCCM regarding the steering wheel angle sensor input. RETRIEVE and REPAIR all non-network DTCs in the SCCM . REFER to Section  211-05.
C1B00:86	Steering Angle Sensor: Signal Invalid	This DTC sets when the ABS module receives invalid data from the SCCM regarding the steering wheel angle sensor input. RETRIEVE and REPAIR all non-network DTCs in the SCCM . REFER to Section  211-05
C1B14:11	Sensor Supply Voltage A: Circuit Short to Ground	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C1B14:11 returns: 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.
C1B14:12	Sensor Supply Voltage A: Circuit Short to Battery	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C1B14:12 returns: 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.
C1B14:1C	Sensor Supply Voltage A: Circuit Voltage Out of Range	This DTC indicates that part of the ABS module has failed internally. CLEAR the DTCs. REPEAT the self-test. If DTC C1B14:1C returns: 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.
U0001:88	High Speed CAN Communication: Bus Off	REFER to Section  418-00 to diagnose the network communication concern.
U0100:00	Lost Communication With ECM/PCM "A": No Sub Type Information	GO to Pinpoint Test F.
U0104:00	Lost Communication With Cruise Control Module: No Sub Type Information	GO to Pinpoint Test G.
U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test I.
U0151:00	Lost Communication With Restraints Control Module: No Sub Type Information	GO to Pinpoint Test J.
U0151:88	Lost Communication With Restraints Control Module: Bus Off	GO to Pinpoint Test K.
U0212:00	Lost Communication With Steering Column Control Module: Bus Off	GO to Pinpoint Test H.
U0300:51	Internal Control Module Software Incompatibility: Not Programmed	CONFIGURE the ABS module. CARRY OUT the PMI . REFER to Section  418-01. CLEAR the DTCs. REPEAT the self-test. If U0300:51 returns, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. TEST the system for normal operation.
U0401:68	Invalid Data Received From ECM/PCM "A": Event Information	This DTC sets when the ABS module receives invalid network data from the PCM. RETRIEVE and REPAIR all non-network DTCs in the PCM. REFER to Section  303-14.
U0405:68	Invalid Data Received From Cruise Control Module: Event Information	This DTC sets when the ABS module receives invalid network data from the C-CM . RETRIEVE and REPAIR all non-network DTCs in the C-CM . REFER to Section  419-03A
U0420:68	Invalid Data Received From Power Steering Control Module: Event Information	This DTC title refers to the SCCM not the Power Steering Control Module (PSCM) , this vehicle is equipped with an SCCM . This DTC sets when the ABS module receives invalid network data from the SCCM . RETRIEVE and REPAIR all non-network DTCs in the SCCM . REFER to Section  419-10.
U0422:68	Invalid Data Received From Body Control Module: Event Information	This DTC sets when the ABS module receives invalid network data from the BCM . RETRIEVE and REPAIR all non-network DTCs in the BCM . REFER to Section  419-10.
U0452:68	Invalid Data Received From Restraints Control Module: Event Information	This DTC sets when the ABS module receives invalid network data from the RCM . RETRIEVE and REPAIR all non-network DTCs in the RCM . REFER to Section  501-20B.
U2007:46	Valve(s): Calibration/Parameter Memory Failure	CONFIGURE the ABS module. CARRY OUT PMI . REFER to Section  418-01. CLEAR the DTCs. REPEAT the self-test. If DTC U2007:46 returns: 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.
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test P.
U2100:41	Initial Configuration Not Complete: General Checksum Failure	GO to Pinpoint Test P.
U2100:55	Initial Configuration Not Complete: Not Configured	GO to Pinpoint Test P.
U2101:00	Control Module Configuration Incompatible: No Sub Type Information	GO to Pinpoint Test P.
U2107:00	Collision Mitigation By Braking: No Sub Type Information	REFER to Section  419-03B.
U2108:62	Adaptive Cruise Control: Signal Compare Failure	REFER to Section  419-03A.
U3000:41	Control Module: General Checksum Failure	This DTC sets when there is a difference between the stability sensor information stored in the ABS module and the actual stability sensor information the ABS module receives from the RCM . Using a scan tool, CARRY OUT PMI on the ABS module using as-built data, then CARRY OUT PMI on the RCM using as-built data. Using a scan tool, CARRY OUT the IVD Initialization procedure. CLEAR the DTC. TEST DRIVE the vehicle at speeds greater than 20 km/h (12 mph). CARRY OUT an ABS module self-test. If the DTC returns and the vehicle is not equipped with adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module. If the DTC returns and the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU . REFER to Hydraulic Control Unit (HCU)
U3000:43	Control Module: Special Memory Failure	GO to Pinpoint Test P.
U3000:47	Control Module: Watchdog Safety Failure	This DTC sets if the ABS module electrical connector is not fully seated and locked. DISCONNECT the ABS module. INSPECT the connector for bent or loose pins. If OK, RECONNECT. CLEAR the DTCs. REPEAT the self-test. If DTC U3000:47 is retrieved again: 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.
U3000:49	Control Module: Internal Electronic Failure	CLEAR the DTCs. CARRY OUT the ABS module self-test. RETRIEVE and RECORD any DTCs. If DTC U3000:49 is retrieved again: 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.
U3000:4B	Control Module: Over Temperature	This DTC sets if the signal from the temperature sensor internal to the ABS module is out of range or is implausible when compared to the temperature sensors inside the HCU . Allow the vehicle to cool down for 15 minutes. CLEAR the DTCs. REPEAT the self-test. If DTC U3000:4B returns: 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.
U3002:62	Vehicle Identification Number: Signal Compare Failure	GO to Pinpoint Test L.
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	GO to Pinpoint Test M.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	GO to Pinpoint Test N.

 

Good luck!

 

[enigma-2]

Kind of sounds like a ABS sensor is dropping out at lower speeds. As you have already changed the sensors on all four wheels, did you check the tone ring on your front wheels? (Front because it only happens when turning). Check for cracks, broke teeth and some other physical damage. Also look to see how much brake dust has accumulated on the ring. Possibly the ring distorts when a left turn has initiated?

 

One other possibility is corrosion on the speed sensor connector(s). Making a weak signal.

Edited October 24, 2022 by enigma-2

[Hammer ninja]

Thank you Haz and enigma-2.  I didn't do a scan but I will now, since you were so kind to provide the DTC's.  Also, enigma-2, I didn't know about the tone rings issues until last night and until I had replaced the speed sensors.  This car is sooo rusty, I suspect there might be a cracked ring.  I'm not sure if this is the appropriate way to respond to the posts, but Thank you for your time!

[Haz]

If you discover any DTC(s) that indicate further investigation is needed, just post it here and I'll provide you the Pinpoint Test information.

 

Good luck!

[Hammer ninja]

Scanned the car and there are 3 Codes for the ABS module:    u0401:68-60      c0030:07-60           c0034:01-28

[enigma-2]

Left front, speed sensor or reluctor ring. The sensor reading from one wheel (the left front wheel in this case), is differing  from that of the other three wheels beyond a predefined limit while the vehicle is travelling in a straight line. Sets these codes. 

 

I'd lean towards a wiring problem as it  happens when in a left turn (suspension geometry may be pulling on the sensor wiring, causing it to open or short).