P1682 00

Plausibility Fault between voltage feed from +15 and main relay

SDI CGM SVG Version 1.58 Date:2018-12-07 J4 0 +1 5 4 3 4 2 M 8 J4 2 5 8 9 A 4 7 6 3 6 0 5 7 5 6 1 4 8 6 4 2 1 2 0 3 1 9 2 J4 5 J3 7 +3 0 2 M 2 4 H 3 3 - 1 1 2 2 0 3 G 7 H 1 0 2 - 1 9 4 H 2 4 - 2 3 4 22 9 ( R 4 ) +B A T 7 2 7 2 3 2 6 F589PS06 050507 J2 6 CPU 5 V P-Bus + CPU CPU CPU CPU P-Bus - 5 V S T O N O F F L O C K 8 7 8 5 8 6 3 0 B + B + B + B + B + > > B + B + > > > > > P - B U S g n d g n d g n d g n d

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:

Continuous

Enable criteria:

Test 1
•Ignition ON.
Test 2
•When the ignition is switched off.

Fault criteria:


Test 1
•Voltage on pin A2/A19 but not on pin A48/A64.
Test 2
•No voltage on pin A2/A19 but on A48/A64 for more than 6 s after ignition off.

Dependent:


None

System reaction to a fault:

None

OK report:

Fault criterion not fulfilled and vehicle speed over 0 km/h for more than 60 s.

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:
•Ignition switch +15
•Ignition Key Position
•Battery Voltage:
(See also description of readings/activations in diagnostic tool)