Group 30 Electrical System—VNL, VNM
Design and Function
Ignition Switch
W3000681
Note:
Numbers inside parenthesis are circuit
numbers.
W3000687
Ignition Switch Connector Detail
The ignition switch is mounted in the key lock assembly. It is a single switch of a new
double contact design – there is no separate start button. The chart below gives the pin
and circuit description.
Pin
Circuit No.
Description
R
195
To accessory power relay
B+
243
+12V Battery supply
50
284
Starter relay feed
P
Not used
30
243A
+12V Battery supply
19
Engine dependent:
VOLVO: 245
Detroit Diesel: 591
VOLVO: Preheat request
Detroit Diesel: Shutdown override relay feed
15
196
To ignition power relay
DR
196A
Ignition feed to engine ECU
21