ESP & spanner light
Q
I have a 2010 Renault Scenic Mk3 1.6 16v VVT Dynamique Tomtom, engine code K4M. After driving for one mile, the check ESP and the orange spanner lit-up only to go off shortly later. Diagnostics pointed to the steering angle sensor. I renewed this and calibrated it by going to full left lock, then full right lock, then centralising the steering.
I then deleted the fault code but the problem remained. I’m using an Icarsoft FRV2.0 diagnostics tool and have the following codes which all can be deleted but return after check ESP and the orange spanner light up.
▶ ABS DTC405362 Memory - Steering wheel angle revolutions
identification
▶ ABS DF087 Memory - STEERING ANGLE SENSOR PROGRAMMING
▶ EBP DTCC15500 Memory - INSTRUMENT PANEL MULTIPLEXED
EMISSION ABSENT
▶ Communications Unit RIGHT-HAND AUXILIARY CIRCUIT. Short circuit to ground
No other faults show-up but passenger door and seat management show – link error, please check:
1 If the vehicle is equipped with the electrical control module.
2 If the cable is connected correctly.
3 If the key is Ignition ON.
Thomas Spendlove
A
I am presuming you have made the three checks suggested by the machine and the cables and connections are good. The code 405362 refers to the anti-lock brake systems and can be due to the wheel speed sensors or G-force sensor giving an implausible signal. The other codes I suspect are also related as they all appear at the same point. The system operates using the ECU which monitors the signals from the ESP sensors, using the information it then determines if the driver’s steering corresponds to the actual direction in which the vehicle is moving. This is why the steering angle sensor code may appear.
The reasons for this code can be as simple as an incorrect tyre pressure or incorrect sized tyre – this upsets the correlation between the signals and can trigger this error code. As the error code does clear and then will return when driving I would not expect it to be a wiring fault as this would not normally clear when the vehicle was stationary.
I would first carry-out the simple check to ensure the tyre pressures are correct and then you will need to use the live data function on your diagnostic reader to check the signals from the ABS sensors are all even. If you detect that one of the signals is not in-line with the other three then the sensors and reluctor rings should be checked.
If not already done so I would also remove and check the condition of the multiplug to the ABS sensor, a poor connection on one of the terminals can cause a malfunction which could result in the symptoms you have.
One other possible cause is a failing battery, these systems are very sensitive to voltage and I would also check that the battery standing and running voltages are correct.
If none of the above reveals the fault then I would suspect that the ABS ECU may be at fault and would get this tested by a company such as either Bba-reman or
ECU Testing.