B1702

Preliminary Work:
- Perform Function Test

Preparation for Test (DTC readout):
1. Fuses OK.
2. Battery voltage > 11 V.
3. Unlock via RCL vehicle.
4. Ignition ON.
5. Connect Hand-Held Tester (HHT).

NOTE: The diagnostic trouble codes (DTC's) can only be read out and erased using the Hand-Held Tester (HHT).

Model 129:
The RCL control module (N54) 129 820 29 26 can only be read out via the impulse counter.

Additional Information:

Note regarding Diagnostic Trouble Codes (DTC's):
Current diagnostic trouble codes are highlighted in black on the display. Additional detailed fault information based on fault type is displayed with nearly all diagnostic codes (DTC's) such as shown in diagram.





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RCL Control Module (N54) Diagnostic Trouble Codes





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