Hyundai Santa Fe (2006 year). Manual — part 768
RT -114
RESTRAINTS
6)
Is the measured resistance within specification?
YES
▶ Go to next step.
NO
▶Replace the PAD switch.
5.
CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
TROUBLESHOOTING
RT -115
DTC B1528 PASSENGER AIRBAG DEACTIVATION SWITCH SHORT OR
SHORT TO GROUND
DTC DESCRIPTION
E8FDD9B3
The deactivation system for the passenger airbag consists of the SRSCM and the Passenger Airbag Deactivation(PAD)
switch. The above DTC is recorded when PAD switch short or short to ground is detected in the PAD system circuit.
DTC DETECTING CONDITION
E13549DA
DTC
Condition
Probable cause
B1528
• Short to ground between PAD switch and SRSCM
• PAD switch malfunction
• SRSCM malfunction
• PAD switch
• Wiring harness
• SRSCM
SCHEMATIC DIAGRAM
E1C1B705
[HARNESS CONNECTOR]
Terminal
Connected to
Function
1
SRSCM Terminal 19(A)
SRSCM Terminal 21(A)
PAD SW High
2
4
IG1
Battery Voltage
SRSCM
PAD
Switch
19(A)
21(A)
1
4
2
Low
High
IG1
[PAD Switch]
SRSCM
PAD SWITCH
CONNECTOR B
CONNECTOR A
Shorting Bar
PAD SW Low
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
4
ERBF501T
SPECIFICATION
EB1FB32A
PAD Switch Status
Resistance (Ω )
Related DTC
Short to Battery
R > 1,114
B1527
ON (PAB Enabled)
728 ~ 1,567
Defect
502 ~ 1,024
B1529
OFF (PAB Disabled)
301 ~ 706
Short to Ground
R < 424
B1528
RT -116
RESTRAINTS
TERMINAL & CONNECTOR INSPECTION
E0AC4EF2
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
INSPECTION PROCEDURE
EA9149BD
1.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING section. (See page RT - 36)
2.
CHECK SHORT TO GROUND
1)
Disconnect the connector of the PAD switch.
2)
Measure resistance between the terminal 1 of PAD switch harness connector and chassis ground.
Specification (resistance) : infinite
PAD Switch
SRSCM
IG1
4
1
2
19(A)
21(A)
Ω
LOCK
ERBF502C
3)
Is the measured resistance within specification?
YES
▶ Check short circuit.
NO
▶ Replace the harness between the SRSCM and the PAD switch.
3.
CHECK SHORT CIRCUIT
1)
Measure resistance between 1 and 2 of PAD switch harness connector.
2)
Measure resistance between 1 and 4 of PAD switch harness connector.
Specification (resistance) : infinite
TROUBLESHOOTING
RT -117
PAD Switch
SRSCM
IG1
4
1
2
19(A)
21(A)
Ω
Ω
LOCK
ERBF501D
3)
Is the measured resistance within specification?
YES
▶ Go to next step.
NO
▶ Repair or replace the wiring harness between the PAD switch and the SRSCM.
4.
CHECK THE PAD SWITCH
1)
Connect the SRSCM connector.
2)
Connect the PAD switch.
3)
Connect the battery negative cable to the battery.
4)
Turn the ignition switch to ON.
5)
Measure resistance between the terminal 19 of the SRSCM harness connector(A) and 1 of PAD switch harness
connector.
Specification (resistance :
PAD switch ON (Enabled positon) : 728 ~ 1,567 Ω
PAD switch OFF (Disabled positon) : 301 ~ 706 Ω
PAD Switch
SRSCM
IG1
4
1
2
19(A)
21(A)
ON
Ω
ERBF501E
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