Description:

The error code ETC 522343.00 is triggered when the power module (HF) PC6 measures an amperage in excess of 40 amps at the output for the heated rear window resistor (R17). This indicates that the circuit is shorted to ground or there is a defective component in the circuit.

Reaction:

When this fault is detected, the power module may disable the heated rear window to prevent damage due to excessive current. This will result in the rear window heater not functioning properly.

Recommendations:

Inspect Electrical Circuits:

• Check for Shorts to Ground: Inspect the wiring and connectors for the heated rear window resistor for signs of short circuits to ground. Look for damaged insulation, exposed wires, or pinched cables.
• Measure Current Draw: Use a multimeter to measure the current draw of the heated rear window resistor to ensure it is within the specified range (below 40 amps).

Test and Replace Components:

• Test Rear Window Heater Resistor: Verify the operation of the R17 resistor. Replace the resistor if it is found to be defective or drawing excessive current.
• Inspect Power Module: Ensure that the power module (HF) PC6 is functioning correctly. Replace the power module if it is found to be faulty.

Repair or Replace Wiring:

• Fix Damaged Wiring: Repair or replace any damaged or shorted wiring in the heated rear window circuit. Ensure all connections are secure and properly insulated.

Note:

Regular maintenance and inspection of the electrical components associated with the heated rear window can help prevent issues related to current overload. Ensuring proper routing and securing of wires can reduce the risk of shorts and enhance system reliability.