E39 / P1682 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE Engine does not start. Engine shut off.

P1682 00

Fault symptom

CHECK ENGINE

Engine does not start.

Engine shut off.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Test 1

•	Ignition ON.

Test 2

•	When the ignition is switched off.

Fault criteria:

The voltage difference between the control module's pins A51/A70 and A73 is more than 3V.

Dependent:

None

System reaction to a fault:

None

Fault handling:

Type III

(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.

Functions in the diagnostic tool related to the fault:

Test value:

Main Relay

Main Relay Output

•	Ignition switch +15

•	Ignition Key Position

•	Battery Voltage:

Activation:

Main Relay

(See also description of readings/activations in diagnostic tool)