Isuzu Axiom: Electrical System Manual - part 26

 

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Isuzu Axiom: Electrical System Manual - part 26

 

 

47-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(Refer to Section 201 for photographs.)
Component
Photo No.
Dash Fuse Box
Behind left I/P side trim panel
42
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Link Connector (DLC)
C-39 (16-BLK)
Below left side of I/P, near engine hood release
45
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Driver’s Seat Belt Switch
In driver’s seat belt buckle
. . . . . . .
Meter Assembly
Left side of I/P
55
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensing and Diagnostic
Module (SDM)
Under front of center console
69
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
B-17 (2-WHT)
Under driver’s seat
116
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-10 (22-BLK)
Behind left kick panel
46
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-15 (22-WHT)
Behind left kick panel
47
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-11 (2-YEL)
Right side of I/P
59
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-24 (30-GRN)
Top of meter assembly
54
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-28 (2-YEL)
Under left side of I/P
48
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
B-9
Under center console
71
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-10
At the rear of the battery tray, right side of engine compartment
15
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .
I-36
Behind left kick panel
47
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-10
Right side of engine compartment
15
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Operation
The Supplemental Restraint System (SRS) consists of
the Sensing and Diagnostic Module (SDM), the driver’s
inflator module, the SRS coil assembly, the passen-
ger’s inflator module, and the AIR BAG readiness indi-
cator light in the meter assembly. The SDM, SRS coil
assembly (driver side only), driver’s inflator module,
passenger’s inflator module, and connector wire make
up the deployment loops. The function of the deploy-
ment loops is to supply current through the inflator mod-
ules, which will cause deployment of the air bags in the
event of a frontal crash of sufficient force, up to 30 de-
grees of the centerline of the vehicle. The inflator mod-
ules are only supplied enough current to deploy when
the SDM detects vehicle velocity changes that are se-
vere enough to warrant deployment.
The SDM contains a sensing device which converts
vehicle velocity change to an electrical signal. The
electrical signal generated is processed by the SDM
and then compared to a value stored in memory. When
the generated signal exceeds the stored value, the
SDM will cause current to flow through the inflator
modules deploying the air bags.
Component Location Index
MULTI-PLEXED INDICATOR CONTROL UNIT
Dash Fuse Box
Data Link Connector (DLC) C-39
(16-BLK)
Lamp Switch
Meter Assembly
Multi-plexed Indicator Control Unit
Powertrain Control Module (PCM)
Taillamp Relay
Component Index
50
MULTI-PLEXED INDICATOR CONTROL UNIT
See Lamp
Switch Details,
page 12.
OFF
PARK
HEAD
Lamp
Switch
Page 12
WHT
I-35
Connector
2
C-4
TAIL
15A
4
X-21
RED/BLK
See Ground Distribution,
pages 14 and 14-1.
Headlamp
COMBINATION
SWITCH
2
RED/BLK
3
GRN/YEL
B-9
RED/BLK
1
X-21
GRN/RED
TAILLAMP
RELAY
GRN/RED
I-35
Connector
3
BLK
BLK
GRN/YEL
Engine Controls
Page 24-8
Keyless Entry
and Anti-theft
Page 133-9
H-16
Connector
14
BLK
BLK
YEL
DASH
FUSE
BOX
13
2
BLK
Lamp ON
input
YEL
1
Ignition
Ground
YEL
H-18
Connector
4
B-9
B-16
Connector
B-16
Connector
HOT AT ALL TIMES
BLK
BLK
GRN/RED
GRN/RED
H-18
Connector
16
GRN/RED
Circuit Schematic
50-1
MULTI-PLEXED INDICATOR CONTROL UNIT
Anti-lock
Brake
System
(ABS)
Page 44
I-24
Connector
I-23
Connector
C-11
METER
15A
YEL
METER
ASSEMBLY
PCM
communication
DASH
FUSE
BOX
See Dash
Fuse Box,
page 11-3.
I-24
Connector
14
B-16
Connector
11
ORN/BLK
H-9
Connector
1
ORN/
BLK
A/T FLUID
INDICATOR
LAMP
CHECK
TRANS
INDICATOR
LAMP
WINTER
DRIVE
INDICATOR
LAMP
POWER
DRIVE
INDICATOR
LAMP
POWER
DRIVE
WINTER
DRIVE
A/T OIL
TEMP
CHECK
TRANS
I-22
Connector
1
20
H-18
Connector
2
VIO
I-24
Connector
27
7
10
ORN/BLK
15
8
12
PNK/GRN
I-22
Connector
12
21
11
PNK/WHT
13
Indicator control
YEL
YEL
See
Indicators
DATA LINK
CONNECTOR
(DLC)
C-39
Connector
2
ORN/BLK
VIO
ORN/BLK
PNK/GRN
PNK/WHT
4
10
RED/BLK
15
P
1
1
RED/BLU
16
R
3
4
YEL/VIO
4
N
9
10
BLU
6
D
8
5
PNK/BLK
17
3
10
1
PNK/YEL
5
2
21
14
BLU/WHT
18
L
2
13
BLU/YEL
3
I-23
Connector
H-18
Connector
RED/BLK
RED/BLU
YEL/VIO
BLU
PNK/BLK
PNK/YEL
BLU/WHT
BLU/YEL
METER
ASSEMBLY
Class 2
serial
data
E-34
Connector
58
ORN/BLK
H-4
Connector
16
ORN/BLK
MULTI-
PLEXED
INDICATOR
CONTROL
UNIT
Solid State:
Do not check
resistance.
A/T shift indicator control
HOT IN ON OR START
POWERTRAIN
CONTROL
MODULE (PCM)
Solid State:
Do not check
resistance.
B-16
Connector
ORN/
BLK
H-16
Connector
H-15
Connector
Circuit Schematic

 

 

 

 

 

 

 

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