Temperature deviation check.
Step-1: Switch-Off the ECU. (i.e. Klemme-15 Off) Step-2: Let the ECU cool-down so that deviation between the board temperature and the sensor calculated temperature is +/- 29°. Step-3: Power-on the ECU. (i.e. Klemme-15 On) Step-4: Replace the powerpack if the DTC is still active.
What you'll see
Limited electronic steering assistance functions. The driver might detect reduction in Assistance/Hard Steering due to reduced electrical support.
System reaction
Set the Yellow Lamp to "On". Steering Assistance reduced to 38%.
Diagnostic depth
The DTC will set during the following condition: 1. Temperature out of range. 2. Deviation between the internal ECU temperature sensors > 30. 3.System state: PreDrive, DriveDown, DriveUp, Error, LowVolt. 4.System voltage is above 6v. 5.System voltage is below 42v.
1. Defective powerpack. 2. Defective Temperature sensor.