T8 / P1682 00
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
No starter motor cranking.
Engine does not start.
Engine shut off.
	
Plausibility Fault between voltage feed from +15 and main relay

Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
No starter motor cranking.
Engine does not start.
Engine shut off.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| • | When the ignition is switched off. | 
Fault criteria:
| • | Voltage on pin A2/A19 but not on pin A48/A64. | 
| • | No voltage on pin A2/A19 but on A48/A64 for more than 6 s after ignition off. | 
Dependent:
System reaction to a fault:
OK report:
| Fault criterion not fulfilled and vehicle speed over 0 km/h for more than 60 s. | 
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) | 
Diagnostic help
Diagnosis regards:
| Finding electrical faults on the power supply from the main relay. | 
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| • | The DTC can be generated due to faults in connector H42-2 (pins 13, 14, 17, 18, 19 and 20). | 
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Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |