B2502

B2502

Component Location:

General Description
The SRS Telltale Lamp is located on the center of crash pad consists with the Digital Clock. When the passenger sets 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:

Schematic 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?

YES
a. Go to "W/Harness Inspection" procedure.

NO
a. Displaying nothing (no DTC) or DTC with label "H" (historical) shows that Fault is intermittent caused by poor contact in the part's and/or SRSCM connector or was repaired and SRSCM memory was not cleared.
Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
b. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

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?

YES
a. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

NO
a. Go to "Telltale lamp Circuit Inspection" procedure.

Telltale lamp Circuit Inspection
4. Ignition "OFF".
5. Remove the Instrument center facia assembly.
6. Ignition "ON" & Engine "OFF".
7. Measure voltage between terminal "1" of the cluster harness connector and chassis ground.

a. Specification : Batt Voltage






8. Is the measured voltage within specifications?

YES
a. Check telltale lamp and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

NO
a. Check airbag fuse, passenger compartment junction block, harness between junction block and SRSCM. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

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?

YES
a. Go to the applicable troubleshooting procedure.

NO
a. System is performing to specification at this time.