LR3/Disco 3
When the ignition is switched on the RCM (restraints control module) performs a self test and then performs cyclical
monitoring of the system. If a fault is detected the RCM (restraints control module) stores a related fault code and
illuminates the SRS (supplemental restraint system) warning indicator. The faults can be retrieved by T4 on a dedicated
link between the RCM (restraints control module) and the diagnostic socket. If a fault that could cause a false fire signal is
detected, the RCM (restraints control module) disables the respective firing circuit, and keeps it disabled during a crash
event.
RCM (restraints control module) Harness Connector C0256
RCM (restraints control module) Harness Connector C0256 Pin Details
Pin No.
Description
Input/Output
1
Left side air bag feed
Output
2
Left side air bag return
Input
3
Left first and second row side air curtain feed
Output
4
Left first and second row side air curtain return
Input
5
Right first and second row side air curtain feed
Output
6
Right first and second row side air curtain return
Input
7
Left third row side air curtain feed
Output
8
Left third row side air curtain return
Input
9
Right third row side air curtain feed
Output
10
Right third row side air curtain return
Input
11 and
12
Not used
-
13
Left rear quarter side impact sensor feed and data
Output/Input
14
Left rear quarter side impact sensor return
Input
15
Right rear quarter side impact sensor feed and data
Output/Input
16
Right rear quarter side impact sensor return
Input
17
Driver safety belt pretensioner feed
Output
18
Driver safety belt pretensioner return
Input
19 and
20
Not used
-
21
Right side air bag feed
Output
22
Right side air bag return
Input
23
Seat position sensor feed
Output
24
Passenger air bag deactivation switch feed (on selection)
Output
25
Driver safety belt buckle sensor feed
Output
26
Front passenger safety belt buckle sensor feed
Output
27
Left B pillar side impact sensor feed and data
Output/Input
