7. Seat switch pack
a. Examine harness wiring, checking continuity between SCM multi-pin connector A2
and switch pack connector pins as follows:
A2 Pin Function Pack pin
08
09
10
11
14
15
16
17
18
19
20
Squab recline
Seat reward
Seat forward
Common +ve
Headrest lower
Headrest raise
Seat rear lower
Seat rear raise
Seat front lower
Seat front raise
Squab incline
Ground 08
13
06
09
15
16
05
04 14
12
07
01
b. Disconnect harness from switch pack and check continuity of each pin to common +ve
(pin
9) when relevant switch is operated eg operation of seat forward switch will give
continuity between pin
9 and pin 6 of the pack.
Test the operation of the lumbar pump switches
(at pins, 03 and 11) by checking that
voltage on each pin toggles between ground and
+12V with each switch operation.
C.
1 1 1 1 1 P19 1 P16 1 P17 1 P20 1 PO8 1 PW 1 1 1 1 1 1 1 J
P11 P15 P14 Pl8
, P10
P02, I ]I 1 ‘I 14
J86 - 1869
Fig. 1 Seat Switch Pack
X300 EDM 15.4 - 26 Issue 1 August 1994
