Volvo VNL Service Manual page 23

Group 30 Electrical System—VNL, VNM
Ignition Switch
Note:
Numbers inside parenthesis are circuit
numbers.
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
R
B+
50
P
30
19
15
DR
W3000681
Circuit No.
195
243
284
243A
Engine dependent:
VOLVO: 245
Detroit Diesel: 591
196
196A
Ignition Switch Connector Detail
Description
To accessory power relay
+12V Battery supply
Starter relay feed
Not used
+12V Battery supply
VOLVO: Preheat request
Detroit Diesel: Shutdown override relay feed
To ignition power relay
Ignition feed to engine ECU
Design and Function
W3000687
21