Fault interpretation
| DF001 PRESENT OR STORED | ECU POWER SUPPLY 1.DEF : Below minimum threshold |
INSTRUCTIONS
Special notes : The fault is confirmed present during a road test with a vehicle speed > 10 km/h.
Conditions for applying the diagnosis for a stored fault: Apply the diagnostic procedure whether the fault is present or stored.
| Check the condition and position of the ABS fuses in the engine fuse and relay box. 25A fuse at F13 on the UPC and 50A power fuse at position 5 on the power fuse panel (busbar). Check continuity between the fuses and ECU connector pins 2 and 3 (voltage present with ignition off on the pins), and between the UCH and ECU pin 18 (voltage present with ignition on on the pin). Check the tightness and condition of the battery terminals. Check the connections on the 26-pin ABS ECU connector. Check the ABS earths on pins 1 and 4 (bolted under the ABS unit) and visually inspect the entire ABS wiring harness. |
| Erase the ECU memory, exit diagnostics and switch off the ignition. Carry out a further check with the diagnostic tool. If the fault persists, contact your Techline. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF006 PRESENT OR STORED | FRONT LEFT WHEEL SPEED SENSOR CIRCUIT CO.0 : Open circuit or short to earth |
INSTRUCTIONS
Special notes : Nothing to report
Conditions for applying the diagnosis for a stored fault: The fault is confirmed present following a road test with a speed > 60 km/h.
CO.0
INSTRUCTIONS
Special notes : Nothing to report.
| Check the connection and the condition of the sensor and ECU connectors. Repair if necessary. |
| Check and ensure continuity, insulation and absence of parasitic resistance on the following links: Sensor connector one of the 2 pins → ECU connector pin 5 Also check the insulation between these two links. If the checks are correct, replace the wheel speed sensor. |
1.DEF
INSTRUCTIONS
Special notes : Nothing to report
| Check the connection and the condition of the sensor connector. Visually inspect the sensor wiring and check the quality of the connection at the 26-pin ECU connector. |
| Visually check the condition of the tone ring (dirt, metal debris...). Clean with compressed air if necessary. Check that the wheel speed sensor is correctly secured (correct clip engagement). Check the sensor / tone ring air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm. Check that the tone ring is compliant (condition, number of teeth = 48). Use the specific command SC001 "Tone ring teeth check". Replace the sensor if necessary. |
| If all checks are correct, reconnect the ECU and the wheel speed sensor, then erase the ECU memory. Exit diagnostics, switch off the ignition and carry out a road test. Replace the sensor bearing if the fault reappears. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF007 PRESENT OR STORED | REAR LEFT WHEEL SPEED SENSOR CIRCUIT CO.0 : Open circuit or short to earth |
INSTRUCTIONS
Special notes : The wheel speed sensors are supplied with +12 V after ignition on, but this supply cannot be measured (supply is cut when the sensor is faulty).
Conditions for applying the diagnosis for a stored fault: The fault is confirmed present following a road test with a speed > 60 km/h.
CO.0
INSTRUCTIONS
Special notes : Nothing to report.
| Check the connection and the condition of the sensor and ECU connectors. Check the connections (pins 31 and 32) at the black 52-pin intermediate connector R2 under the front left seat. Repair if necessary. |
| Check and ensure continuity of the following links: Sensor connector one of the 2 pins → ECU connector pin 6 Also check the insulation between these two links. If the links are faulty, carry out the following checks: Make sure the intermediate connector R2 is in good condition and correctly connected. Ensure continuity, insulation and absence of parasitic resistance between: ECU connector pin 6 → intermediate connector pin 32 Repair if necessary or replace the wiring. Ensure continuity, insulation and absence of parasitic resistance between: Sensor connector one of the 2 pins → intermediate connector pin 31 Repair if necessary or replace the wiring. If the checks are correct, replace the wheel speed sensor. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
1.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Visually check the connection and the condition of the sensor and ECU connectors. Check the connection and the condition of the pins (31 and 32) at the black 52-pin intermediate connector R2 under the front left seat. |
| Visually check the condition of the tone ring (dirt, metal debris...); clean with compressed air if necessary. Check that the wheel speed sensor is correctly secured (correct clip engagement). Check the sensor - tone ring air gap over one wheel revolution: 0.1 mm < rear wheel air gap < 1.2 mm. Check that the tone ring is compliant (condition, number of teeth = 48). Use the specific command SC001 "Tone ring teeth check". Replace the sensor if necessary. |
| If all checks are correct, reconnect the ECU and the wheel speed sensor, then erase the ECU memory. Exit diagnostics, switch off the ignition and carry out a road test. Replace the sensor bearing if the fault reappears. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF017 PRESENT OR STORED | CONTROL UNIT 1.DEF : Power supply or internal electronic fault |
INSTRUCTIONS
Special notes : Nothing to report
Conditions for applying the diagnosis for a stored fault: The fault is confirmed present following a road test with a speed > 60 km/h.
| Check the condition and position of the two ABS power fuses (50A and 60A) in the engine interconnection box. Check continuity between the fuse and pins 2 and 3 of the ECU connector (+ present before ignition on the pins) and between the passenger compartment control unit and pin 18 of the ECU (+ present after ignition on the pin). Check the tightness and condition of the battery terminals. Check the connections on the 26-pin ABS ECU connector. Check the ABS wheel ground connections on pins 1 and 4 (bolted under the ABS unit) and visually inspect the entire ABS wiring. Repair if necessary. |
| Erase the ECU memory, exit diagnostics and switch off the ignition. Carry out a further check with the diagnostic tool. If the fault persists, contact your Techline. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test, then check again with the diagnostic tool.
| DF020 PRESENT | SPEEDOMETER INDEX PROGRAMMING |
INSTRUCTIONS
Special notes : Nothing to report.
| The ABS BOSCH 8.0 ECU with "speedometer function" supplies the vehicle speed signal to all users of this information in the vehicle (instrument panel, engine management, etc.). This vehicle speed signal replaces the one supplied by the speed sensor located on the gearbox. The ABS control unit calculates the vehicle speed from the wheel speeds and the rolling circumference of the tyres fitted to the vehicle. Note: the vehicle speed is supplied by hard wire (pin 23) to the COSLAD control unit, the radio and the electric sunroof, and via the multiplexed network to the other control units. The tyre rolling radius must be programmed into the memory of a new ECU. This consists of entering an index "X" using the diagnostic tool with the command VP007 "Odometer index". After entering the index using command VP007, erase the control unit memory, then switch off the ignition. Using parameter PR030, check that the entered index has been taken into account. |
| If the fault persists, contact your Techline. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test, then check again with the diagnostic tool.
| DF026 PRESENT OR STORED | FRONT RIGHT WHEEL SPEED SENSOR CIRCUIT CO.0 : Open circuit or short to earth |
INSTRUCTIONS
Special notes : The wheel speed sensors are supplied with +12 V after ignition on, but this supply cannot be measured (supply is cut when the sensor is faulty).
Conditions for applying the diagnosis for a stored fault: The fault is confirmed present following a road test with a speed > 60 km/h.
CO.0
INSTRUCTIONS
Special notes : Nothing to report
| Check the connection and the condition of the sensor and ECU connectors. Repair if necessary. |
| Check and ensure continuity, insulation and absence of parasitic resistance on the following links: One sensor connector wire → Pin 9 of the control unit connector Also check the insulation between these two links. If the checks are correct, replace the wheel speed sensor. |
1.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Check the connection and the condition of the sensor connector. Visually inspect the sensor wiring and check the quality of the connection at the 26-pin ECU connector. |
| Visually check the condition of the tone ring (dirt, metal debris...); clean with compressed air if necessary. Check that the wheel speed sensor is correctly secured (correct clip engagement). Check the sensor-to-target air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm. Check that the tone ring is compliant (condition, number of teeth = 48). Use the specific command SC001 "Tone ring teeth check". Replace the sensor if necessary |
| If all checks are correct, reconnect the ECU and the wheel speed sensor, then erase the ECU memory. Exit diagnostics, switch off the ignition and carry out a road test. Replace the sensor bearing if the fault reappears. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF027 PRESENT OR STORED | REAR RIGHT WHEEL SPEED SENSOR CIRCUIT CO.0 : Open circuit or short to earth |
INSTRUCTIONS
Special features: The wheel speed sensors are supplied with +12 V APC, but this supply cannot be measured (supply is cut when the sensor is faulty).
Conditions for applying the diagnosis for a stored fault: The fault is declared present after a road test with a speed > 60 km/h.
CO.0
INSTRUCTIONS
Special features: Nothing to report
| Check the connection and the condition of the sensor and ECU connectors. Check the wiring (pins 33 and 34) at the black 52-way intermediate connector R2 under the front left seat. Repair if necessary. |
| Check and ensure continuity of the following links: One sensor connector wire → Pin 8 of the control unit connector Also check the insulation between these two links. If the links are faulty, carry out the following checks: Make sure the intermediate connector R2 is in good condition and correctly connected. Ensure continuity, insulation and absence of parasitic resistance between: Control unit connector pin 8 → Pin 34 of the intermediate connector Repair if necessary or replace the wiring. Ensure continuity, insulation and absence of parasitic resistance between: Sensor connector one of the 2 wires → Pin 34 of the intermediate connector Repair if necessary or replace the wiring. If the checks are correct, replace the wheel speed sensor. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
1.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Visually check the connection and the condition of the sensor and ECU connectors. Check the connection and condition of the wiring (pins 33 and 34) at the black 52-way intermediate connector R2 under the front left seat. |
| Visually check the condition of the tone ring (dirt, metal debris...); clean with compressed air if necessary. Check that the wheel speed sensor is correctly secured (correct clip engagement). Check the sensor - tone ring air gap over one wheel revolution: 0.1 mm < rear wheel air gap < 1.2 mm. Check that the tone ring is compliant (condition, number of teeth = 48). Use the specific command SC001 "Tone ring teeth check". Replace the sensor if necessary |
| If all checks are correct, reconnect the ECU and the wheel speed sensor, then erase the ECU memory. Exit diagnostics, switch off the ignition and carry out a road test. Replace the sensor bearing if the fault reappears. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF063 PRESENT OR STORED | WHEEL SPEED CONSISTENCY CC.1: Short circuit to +12 V |
INSTRUCTIONS
Priorities when handling multiple faults: Apply the treatment for faults DF006, DF007, DF026 and DF027 first, even if they are stored.
Conditions for applying the diagnosis for a stored fault: The fault is declared present during: a road test with speed exceeding 60 km/h on a winding road.
CC.1 - 1.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Make sure the braking system is in good condition (pad condition, sealing, seizing, bleeding, etc.). Check the condition of the running gear, and that the tyres are compliant and in good condition. Visually check the connection and condition of the sensor and control unit wiring. Check the connection and condition of the wiring (pins 31, 32, 33 and 34) at the black 52-way intermediate connector R2 under the front left seat. Repair if necessary. |
| Check that the wheel speed sensors are securely fitted (correctly clipped). Check the sensor-to-target air gap over one wheel revolution: 0.1 mm < wheel air gap < 1.2 mm. Check that the tone ring is compliant (condition, number of teeth = 48). Use the specific command SC001 "Tone ring teeth check". Repair if necessary. |
| If all checks are correct, erase the control unit memory. Exit diagnosis and carry out a road test. If the fault persists, check continuity, insulation and the absence of parasitic resistance on the wiring of all four sensors. |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF066 PRESENT OR STORED | MULTIPLEXED INJECTION TRANSMISSION ABSENT 1.DEF: Apply the multiplexed network diagnostic procedure |
INSTRUCTIONS
Special features: Although stored in the control unit, the fault does not come from ABS components but from injection components. An injection diagnosis must therefore be carried out.
Note: The injection system does not always store these intermittent faults as quickly as the ABS does.
If there is no fault stored in the injection control unit, start the engine and, if no fault appears, contact your Techline. After the problem in the injection system has been resolved, erase the fault memories of the ABS control unit.
The multiplexed injection transmission is sent to the ABS via the Protection and Switching Unit.
Priorities when handling multiple faults: Apply the treatment for faults DF152 and DF153 first if they are present or stored.
Conditions for applying the diagnosis for a stored fault: The fault is declared present when the engine starts.
Carry out a multiplex network test and an injection check using the diagnostic tool.AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF152 PRESENT | MULTIPLEX NETWORK 1.DEF: Apply the multiplexed network diagnostic procedure |
INSTRUCTIONS
Special features: In case of a problem on the multiplexed network, apply the multiplexed network diagnostic procedure.
Apply the multiplex network diagnosis procedure.
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF153 PRESENT | MULTIPLEX NETWORK |
INSTRUCTIONS
Special notes : Nothing to report
ABS CAN electronic problem, contact your Techline.
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF188 PRESENT OR STORED | BRAKE SWITCH CIRCUIT |
INSTRUCTIONS
Special notes : Nothing to report.
Conditions for applying the diagnosis for a stored fault: Erase the stored fault, carry out a road test at a speed > 60 km/h and perform a braking with ABS control active.
| Check that the brake switch connector is correctly connected and in good condition. Check and confirm the ignition-switched + (after ignition) is present on pins 2 and 4 of the brake switch connector. Check the operation of the brake switch:
Replace the brake switch if necessary. |
| If the fault persists, check the condition and correct connection of the Anti-lock Braking System / Dynamic Driving Control unit connector. Check the continuity and insulation of the wiring between: Brake switch connector pin 1 → Control unit connector pin 20 Repair if necessary. |
| If the fault persists, contact your Techline |
AFTER REPAIR
Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
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