B2502

General Description

The SRS Telltale Lamp is located on the center of crash pad consists with the Digital Clock.
When the passenger seats are unoccupied, the Telltale Lamp lights up for the notice, and if passenger are occupied under seat,Telltale Lamp are goes off automatically.

DTC Description

DTC B2502 is recorded when occurrence of a malfunction in the Telltale indicator Lamp system.

DTC Detecting Condition






Diagnostic Circuit Diagram






Monitor Scantool Data

1. Ignition "OFF", connect scantool.
2. Ignition "ON"& Engine "OFF", select "Diagnostic Trouble Codes(DTC)" mode.
3. Monitor diagnostic trouble code and present of trouble code.
4. Using a scan tool, clear the DTC.






5. Is DTC present problem ?






Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check shorting connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Telltale lamp Circuit Inspection

1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the battery and wait at least one minutes.
3. Disconnect SRSCM main harness connector.
4. Connect the battery (-) terminal cable to the battery and Ignition "ON" & Engine "OFF".
5. Measure voltage between Telltale lamp terminal of the SRSCM harness connector and chassis ground.

Specification :Batt Voltage

6. Is the measured voltage within specifications?






Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes(DTC)" mode.
2. Using a scan tool, clear the DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTC present ?