The deactivation system for the passenger airbag consists of the SRSCM and the Passenger Airbag Deactivation(PAD) switch. The above DTC is recored when the defect or instability of PAD switch is detected in the PAD system circuit.
DTC | Condition | Probable cause |
B1529 B1530 | ● PAD switch malfunction ● SRSCM ㅡMalfunction | ● PAD switch ● Wiring harness ● SRSCM |
PAD Switch Status | Current (mA) | Related DTC |
Open or Short to Battery | ＜ 2.71 | B1527 |
PAB Enabled Position | 2.96 ~ 5.01 | |
Defect | 5.46 ~ 6.68 | B1529 |
PAB Disabled Position | 7.28 ~ 12.73 | |
Short or Short to Ground | ＞ 13.87 | B1528 |
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
CHECK POWER SUPPLY
Connect the battery negativecable to the battery.
Turn the ignition switch to ON.
Measure voltage between the terminal and 4 of PAD switch connector and chassis ground.
Specification (voltage) : 9 ~ 16 V
Is the measured voltage within specification?
▶ Check ground circuit.
▶Replace the harness between the battery line and the PAD switch.
CHECK GROUND CIRCUIT
Turn the ignition switch to OFF.
Disconnect the battery negative cable from the battery.
Disconnect the connector of the PAD switch.
Measure resistance between the terminal 2 of PAD switch connector and chassis ground.
Specification (resistance) : 0 Ω
Is the measured resistance within specification?
▶ Go to next step.
▶ Repair or replace the wiring harness between the PAD switch and the chassis ground.
CHECK THE PAD SWITCH
Connect the SRSCM connector.
Connect the PAD switch.
Connect the battery negative cable to the battery.
Turn the ignition switch to ON.
Measure current between the terminal 71 of the SRSCM harness connector and 1 of PAD switch connector.
Specification (current) :
PAD switch (Enabled positon) : 2.96 ~ 5.01 mA
PAD switch (Disabled positon) : 7.28 ~ 12.73 mA
Is the measured current within specification?
▶ Go to next step.
▶ Replace the PAD switch.
CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
