B1102
DTC B1101 BATTERY VOLTAGE TOO HIGHDTC B1102 BATTERY VOLTAGE TOO LOW
DTC DESCRIPTION
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 Detecting Condition:
Schematic Diagram:
SPECIFICATION
Voltage : 9.0 ≤ V ≤ 16.0 V
TERMINAL & CONNECTOR INSPECTION
1. Visually inspect all connectors related to the affected circuit for damage and secure connection.
2. Inspect terminals for damage and corrosion.
CAUTION: Avoid damaging connectors during the inspection process.
3. Are any problems found?
NO - Go to next step.
YES - After repairing the trouble part, check whether DTC occurs or not.
INSPECTION PROCEDURE
1. PREPARATION
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal from the battery and wait for at least 3 minutes.
3. Remove the DAB module and disconnect the DAB connector.
4. Disconnect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
5. Disconnect the SRSCM connector.
2. CHECK SOURCE VOLTAGE
1. Turn the ignition switch to ON.
2. Measure voltage between the terminal 13 (A) of SRSCM harness connector and chassis ground.
Specification (voltage): 9.0 ≤ V ≤ 16.0 V
Is the measured voltage within specification?
NO - Check the battery.
YES - 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).
3. CHECK THE BATTERY
1. Check the battery.
Is the battery normal?
YES - Check the alternator.
NO - Repair or replace the battery.
4. CHECK ALTERNATOR
1. Check the alternator.
Is the alternator normal?
YES - Check wiring harness.
NO - Repair or replace the alternator.
5. CHECK WIRING HARNESS
1. Check the wiring harness between the battery and SRSCM.
Check the wiring harness between the battery and chassis ground.
Is the wiring harness normal?
YES - Check the DTC again.
NO - Repair or Replace the wiring harness.
6. CHECK THE DTC AGAIN
1. Turn the ignition switch to LOCK and wait for at least 30 seconds.
CAUTION: Check again that the battery negative (-) terminal is disconnected from the battery.
2. Install the DAB module and connect the DAB connector.
3. Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
4. Connect the SRSCM connector.
5. Connect the negative (-) terminal 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?
YES - Perform the troubleshooting procedures associated with those codes.
NO - Problem is intermittent or was repaired and SRSCM memory was not cleared.