Hyundai Santa Fe (2006 year). Manual — part 764
RT -98
RESTRAINTS
DTC B1451 SIDE IMPACT SENSOR [REAR-DRIVER] CIRCUIT
SHORT TO GROUND
DTC B1454 SIDE IMPACT SENSOR [REAR-PASSENGER] CIRCUIT
SHORT TO GROUND
DTC DESCRIPTION
E2C1F3FE
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to ground on the SIS circuit.
DTC DETECTING CONDITION
EB5BE55B
DTC
Condition
Probable cause
B1451
B1454
• Short to ground between SIS and SRSCM
• Side Impact Sensor (SIS) Malfunction
• SRSCM Malfunction
• Short to ground circuit on
wiring harness
• Side Impact Sensor (SIS)
• SRSCM
SCHEMATIC DIAGRAM
E2866786
[HARNESS CONNECTOR]
SIS[Driver] SIS[Passenger]
SRSCM
22(B)
SIS [Driver]
High
21(B)
23(B)
SIS [Passenger]
High
24(B)
Low
Low
1
2
1
2
Terminal
Terminal
Connected to
Function
Connected to
Function
1
SRSCM Terminal 22(B)
SIS High
2
SRSCM Terminal 21(B)
SIS Low
SIS High
SIS Low
SIS [Driver]
1
SRSCM Terminal 23(B)
2
SRSCM Terminal 24(B)
SIS [Passenger]
SIS High
SIS Low
SRSCM
CONNECTOR A
CONNECTOR B
Shorting Bar
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
6
5
4
3
2
1
12
11
10
9
8
7
18
17
16
15
14
13
24
23
22
21
20
19
1
2
1
2
SCMRT6170L
TERMINAL & CONNECTOR INSPECTION
E9E88BA8
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
INSPECTION PROCEDURE
E1588FE0
1.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
2.
CHECK SHORT TO GROUND
TROUBLESHOOTING
RT -99
1)
Measure resistance between the terminal 1 of SIS harness connector and chassis ground.
Specification (resistance) : infinite
SIS
SRSCM
LOCK
21(24)B
2
22(23)B
1
Ω
ERBF502A
2)
Is the measured resistance within specification?
YES
▶Check the SIS.
NO
▶ Repair or replace the wiring harness between the SIS and the SRSCM.
3.
CHECK THE SIDE IMPACT SENSOR
1)
Replace the Side Impact Sensor(SIS) with a new one.
● Refer to "Side Impact Sensor(SIS)" section in this SERVICE MANUAL.
2)
Install the DAB module and connect the DAB connector.
3)
Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
4)
Connect the SRSCM connector.
5)
Connect the battery negative cable to the battery.
6)
Connect a Hi-Scan(Pro) to the data link connector.
7)
Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC related to Side Impact Sensor(SIS)?
YES
▶ Go to next step.
NO
▶ Replace SIS module.
4.
CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
RT -100
RESTRAINTS
DTC B1452 SIDE IMPACT SENSOR [REAR-DRIVER] CIRCUIT
SHORT TO BATTERY
DTC B1455 SIDE IMPACT SENSOR [REAR-PASSENGER] CIRCUIT
SHORT TO BATTERY
DTC DESCRIPTION
EE3957BE
The detecting system for side crash consists of the SRSCM and four Side Impact Sensors (SIS). The SRSCM sets above
DTC(s) if it detects short to battery line on the SIS circuit.
DTC DETECTING CONDITION
EC9739E6
DTC
Condition
Probable cause
B1452
B1455
• Short to battery line between SIS and SRSCM
• Side Impact Sensor (SIS) Malfunction
• SRSCM Malfunction
• Short to battery line circuit on
wiring harness
• Side Impact Sensor (SIS)
• SRSCM
SCHEMATIC DIAGRAM
E076667C
[HARNESS CONNECTOR]
SIS[Driver] SIS[Passenger]
SRSCM
22(B)
SIS [Driver]
High
21(B)
23(B)
SIS [Passenger]
High
24(B)
Low
Low
1
2
1
2
Terminal
Terminal
Connected to
Function
Connected to
Function
1
SRSCM Terminal 22(B)
SIS High
2
SRSCM Terminal 21(B)
SIS Low
SIS High
SIS Low
SIS [Driver]
1
SRSCM Terminal 23(B)
2
SRSCM Terminal 24(B)
SIS [Passenger]
SIS High
SIS Low
SRSCM
CONNECTOR A
CONNECTOR B
Shorting Bar
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
6
5
4
3
2
1
12
11
10
9
8
7
18
17
16
15
14
13
24
23
22
21
20
19
1
2
1
2
SCMRT6170L
TERMINAL & CONNECTOR INSPECTION
E5EA384D
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
INSPECTION PROCEDURE
E32EDA9C
1.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
2.
CHECK SHORT TO BATTERY LINE
TROUBLESHOOTING
RT -101
1)
Connect the battery negative cable to the battery.
2)
Turn the ignition switch to ON.
3)
Measure voltage between the terminal 1 of SIS harness connector and chassis ground.
Specification (voltage) : Approximately 0V
SIS
SRSCM
ON
21(24)B
2
22(23)B
1
V
ERBF503R
4)
Is the measured voltage within specification?
YES
▶Check the SIS Module.
NO
▶Repair the short to battery line circuit on wiring harness between the SIS and the SRSCM.
3.
CHECK THE SIS MODULE
1)
Replace the Side Impact Sensor(SIS) with a new one.
● Refer to "Side Impact Sensor(SIS)" section in this SERVICE MANUAL.
2)
Install the DAB module and connect the DAB connector.
3)
Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
4)
Connect the SRSCM connector.
5)
Connect the battery negative cable to the battery.
6)
Connect a Hi-Scan(Pro) to the data link connector.
7)
Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC related to Side Impact Sensor(SIS)?
YES
▶ Go to next step.
NO
▶ Replace SIS module.
4.
CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
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