Sub wake-up bus short circuit to ground.
• Check wiring and connectors of the sub wake-up bus. • Measure the voltage between the sub wake-up bus and ground. Try to find where the fault is and if necessary, disconnect modules from the sub wake-up bus. When pressing any button on a connected switch module the bus should go high.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
The DTC is set active if the feedback of pin A10 (sub wake-up bus) is low even though DAS is trying to set it high for more than 1000ms. The DTC is set inactive if the feedback of pin A10 is high when DAS is trying to set it high for more than 1000ms. The DTC is not set in the following cases: • first 2 seconds after ignition on • system voltage is below 22V • system voltage is above 32V
• Defect wiring or connectors for the sub wake-up bus. • Electrical error in any of the connected modules.