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The following test steps must be performed in the given order. If a fault is found in one test step, the subsequent test steps can be skipped.
Trouble Codes
- If any trouble code except trouble code P1811 is stored, continue the troubleshooting as follows:
- With trouble code P1811 recognised:
Function Checks
- Ignition OFF
- Wait time: minimum 30 s
- Delete trouble codes
- Read and record again trouble codes including status after the test drive.
- With trouble code P1811 recognised:
After successful test/fault repair proceed to the next test step
Note:
If the control unit ECM recognises an invalid signal via CAN-Bus, one or more of the trouble codes P1811 are stored. These trouble codes must be seen as an effect of a detected fault in another Functional System.
If the engine is very hot, the cooling fans stay on after the ignition is switched off. In this case, the control unit switches itself off 30 s after the cooling fans go off.
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