Honda Ridgeline. Manual — part 554
*01
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Self-diagnostic System
24-41
’07-08 models
DRIVER’S SEAT
IDC
MICROPROCESSOR and DIAGNOSTIC CIRCUIT
SRS UNIT
IMPACT
GND
TRIGGER CIRCUIT
SCS
MES
DLC
VA
VB
LEFT
FRONT
IMPACT
SENSOR
RIGHT
FRONT
IMPACT
SENSOR
SIDE
AIRBAG
INDICATOR
OPDS/ODS
UNIT
OPDS
SENSOR
FRONT
PASSENGER’S
SEAT
LEFT
SIDE
IMPACT
SENSOR
(FIRST)
RIGHT
SIDE
IMPACT
SENSOR
(FIRST)
DRIVER’S
SIDE
AIRBAG
INFLATOR
FRONT
PASSENGER’S
SIDE AIRBAG
INFLATOR
DRIVER’S
AIRBAG
FIRST
INFLATOR
DRIVER’S
AIRBAG
SECOND
INFLATOR
FRONT
PASSENGER’S
AIRBAG
SECOND
INFLATOR
FRONT
PASSENGER’S
AIRBAG
FIRST
INFLATOR
CABLE
REEL
FRONT
PASSENGER’S
SEAT BELT
TENSIONER
DRIVER’S
SEAT BELT
TENSIONER
RIGHT SIDE
CURTAIN
AIRBAG
INFLATOR
LEFT SIDE
CURTAIN
AIRBAG
INFLATOR
SRS
INDICATOR
DATA
LINK
CIRCUIT
MEMORY
CIRCUIT
SIDE
IMPACT
SENSOR
FRONT
IMPACT
SENSOR
UNDER
DASH
FUSE/
RELAY
BOX
POWER
SUPPLY
CIRCUIT
MULTIPLEX
INTEGRATED
CONTROL
UNIT
LEFT
SIDE IMPACT
SENSOR
(SECOND)
ROLL
RATE
SENSOR
RIGHT
SIDE IMPACT
SENSOR
(SECOND)
FRONT
PASSENGER’S
SEAT
FRONT
PASSENGER’S
WEIGHT
SENSORS
DRIVER’S
SEAT
POSITION
SENSOR
FRONT
PASSENGER’S
AIRBAG
CUTOFF
INDICATOR
A self-diagnostic circuit is built into the SRS unit; when the ignition switch is turned ON (II), the SRS indicator comes
on and goes off after about 6 seconds if the system is operating normally.
If the indicator does not come on, or does not go off after 6 seconds, or if it comes on while driving, it indicates an
abnormality in the system. The system must be inspected and repaired as soon as possible.
For better serviceability, the SRS unit memory stores a DTC that relates to the cause of the malfunction, and the unit is
connected to the data link connector (DLC). This information can be read with the HDS when it is connected to the DLC
(16P) (see page 24-27).
NOTE: Before you disconnect the negative cable from the battery for troubleshooting, make sure you have the anti-
theft code for the audio system and the navigation system (if equipped). Write down the XM audio presets (if
equipped).
(cont’d)
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*02
SRS Unit Inputs and Outputs at Connector A (28P)
Terminal
Number
Wire Color
Terminal Name
Description
24-42
SRS
System Description (cont’d)
1
GRN/YEL
LA2
Power source for driver’s airbag second inflator
2
GRN/WHT
LA2
Ground for driver’s airbag second inflator
3
BLU/BLK
RA2
Power source for passenger’s airbag second inflator
4
BLU/RED
RA2
Ground for passenger’s airbag second inflator
5
LT GRN/BLK
MES
Memory erase signal input
6
BRN
SCS
Service check signal input
7
GRN/BLK
LA1
Power source for driver’s airbag first inflator
8
GRN/RED
LA1
Ground for driver’s airbag first inflator
9
YEL
RA1
Power source for passenger’s airbag first inflator
10
BLU/YEL
RA1
Ground for passenger’s airbag first inflator
11
PNK
SRS IND
SRS indicator output line
12
RED/BLU
PTT
Passenger’s airbag cutoff indicator output line
14
GRN/ORN
ODS/OPDS
Sends and receives communication signal
15
BRN/YEL
LFS
Ground for left front impact sensor
16
BRN
RFS
Ground for right front impact sensor
17
WHT
VA
SRS system sub power (common with ODS)
18
WHT/RED
VB
SRS dedicated power (dedicated booster circuit)
21
YEL
CDS
Crash detection signal
22
BLK
SRS GND A
Ground circuit for the SRS (G405)
23
BLK
SRS GND B
Ground circuit for the SRS (G405)
24
LT BLU
K-LINE
Sends and receives scan tool signal (serial data)
27
RED
LFS
Power source for left front impact sensor
28
GRN
RFS
Power source for right front impact sensor
NOTE:
BLU or BRN wire may be substituted for the wire colors in this table.
: ’07-08 Models
Wire side of female terminals
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+
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+
*03
SRS Unit Inputs and Outputs at Connector B (28P)
Terminal
Number
Wire Color
Terminal Name
Description
24-43
1
RED/BLU
LRP
Power source for driver’s side seat belt tensioner
2
RED/WHT
LRP
Ground for driver’s seat belt tensioner
3
RED/BLK
RRP
Power source for front passenger’s seat belt tensioner
4
RED/YEL
RRP
Ground for front passenger’s seat belt tensioner
5
GRN/WHT
SS
Ground for driver’s seat position sensor
6
BLU/RED
SS
Power source for driver’s seat position sensor
11
BLU/RED
LBSC
Driver’s seat belt buckle switch un-buckled signal
12
LT GRN
LBSO
Driver’s seat belt buckle switch buckled signal
15
BLU
RBSC
Front passenger’s seat belt buckle switch un-buckled signal
16
ORN
RBSO
Front passenger’s seat belt buckle switch buckled signal
NOTE:
BLU or BRN wire may be substituted for the wire colors in this table.
: ’07-08 Models
(cont’d)
Wire side of female terminals
+
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+
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+
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+
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+
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+
−
+
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+
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+
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*04
SRS Unit Inputs and Outputs at Connector C (28P)
Terminal
Number
Wire Color
Terminal Name
Description
24-44
SRS
System Description (cont’d)
1
WHT/GRN
LSA
Power source for driver’s side airbag inflator
2
WHT/RED
LSA
Ground for driver’s side airbag inflator
3
WHT/BLK
RSA
Power source for front passenger’s side airbag inflator
4
WHT/BLU
RSA
Ground for front passenger’s side airbag inflator
7
BLU/BLK
LCA
Power source for left side curtain airbag inflator
8
BLU
LCA
Ground for left side curtain airbag inflator
9
RED/YEL
RCA
Power source for right side curtain airbag inflator
10
RED
RCA
Ground for right side curtain airbag inflator
11
PNK/BLU
LBS1
Power source for left side impact sensor (first)
12
GRY/RED
LBS1
Ground for left side impact sensor (first)
13
GRN
RRS
Power source for roll rate sensor
14
BLU/GRN
RRS
Ground for roll rate sensor
15
BRN/YEL
RBS1
Power source for right side impact sensor (first)
16
LT GRN/RED
RBS1
Ground for right side impact sensor (first)
17
GRN/BLK
LSC1
Power source for left side impact sensor (second)
18
ORN
LSC1
Ground for left side impact sensor (second)
19
YEL/BLK
RCS1
Power source for right side impact sensor (second)
20
YEL
RCS1
Ground for right side impact sensor (second)
NOTE:
BLU or BRN wire may be substituted for the wire colors in this table.
Wire side of female terminals
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