The SRSCM sets above DTC(s) if it detects that the battery voltage of restraints system is too high or too low. When the voltage returns to normal, the SRS warning light automatically goes off and a malfunction is no longer indicated.
DTC | Condition | Probable cause |
B1111 | Battery Voltage ＞ 16.0 V for 16 seconds after IG ON | ● Battery ● Alternator ● Wiring Harness ● SRSCM |
B1112 | Battery Voltage ＜ 9.0 V for 16 seconds after IG ON |
Voltage : 9.0 ~ 16.0 V
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
CHECK SOURCE VOLTAGE
Turn the ignition switch to ON.
Measure voltage between the terminal 26 of SRSCM harness connector and chassis ground.
Specification (voltage) : 9.0 ~ 16.0 V
Is the measured voltage within specification?
▶ Check the battery.
▶ Replace the SRSCM with a new one, and then check the vehicle again. At this time, if the vehicle normally operates with a new SRSCM, the fault may be the SRSCM(Replace SRSCM).
CHECK THE BATTERY
Check the battery.
● Refer to "EE" group in this SERVICE MANUAL.
Is the battery normal?
▶ Check the alternator.
▶ Repair or replace the battery.(Refer to "EE" group in the SERVICE MANUAL)
CHECK ALTERNATOR
Check the altenator.
● Refer to "EE" group in the SERVICE MANUAL.
Is the alternator normal?
▶ Check wiring harness.
▶ Repair or replace the alternator.(Refer to "EE" group in the SERVICE MANUAL)
CHECK WIRING HARNESS
Check the wiring harness between the battery and SRSCM.
Is the wiring harness normal?
▶ Check the DTC again.
▶ Repair or Replace the wiring harness.
CHECK THE DTC AGAIN
Turn the ignition switch to LOCK and wait for at least 30 seconds.
Check again that the battery negative cable is disconnected from the battery.
Install the DAB module and connect the DAB connector.
Connect the connectors of the PAB, SAB, BPT and SIS.
Connect the SRSCM connector.
Connect the battery negative cable to the battery.
Connect a Hi-Scan(Pro) to the data link connector.
Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC?
▶ Perform the troubleshooting procedures associated with those codes.
▶ Problem is intermittent or was repaired and SRSCM memory was not cleared.
