General Description

DTC Description

DTC Detecting Condition

Item		Detecting Condition	Possible cause
DTC Strategy		• Check current(PWM type)	• Short to ground in STPS harness. • Poor connection of connected part. • Faulty STPS. • Faulty SRSCM.
Enable Conditions		• Ignition "ON"
Threshold Value		• I < 3.0 mA
Diagnostic Time	Qualification	• More than 1 sec
	De-Qualification	• More than 2 sec

Specification

Test Condition	Current (A)
Ignition ON	Rearward : 12 ~ 18mA Forward : 4 ~ 7mA

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 ? ▶ Go to "W/Harness Inspection" procedure. ▶ 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. ▶ 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 connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3.	Has a problem been found? ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. ▶ Go to "Main harness circuit inspection" procedure.

Main harness Circuit Inspection

1.	Ignition "OFF".

2.	Disconnect the battery (-) terminal cable from the battery and wait at least one minutes.

3.	Disconnect STPS connector and SRSCM main harness connector.

4.	Connect the battery (-) terminal cable to the battery and Ignition "ON" & Engine "OFF".

5.	Measure voltage between terminal "High" of the STPS harness connector and chassis ground. Specification : approx. 0V

6.	Is the measured resistance within specifications? ▶ Go to "Component Inspection" procedure. ▶ Substitute the SRS main harness and check for proper operation. If the problem is corrected, replace SRS main harness and then go to "Verification of Vehicle Repair" procedure.

Component Inspection

1.	Ignition "ON" & Engine "OFF" and Using a scan tool, clear the DTC.

2.	Ignition "OFF".

3.	Disconnect the battery (-) terminal cable from the battery, and wait at least one minutes.

4.	Disconnect STPS connector .

5.	Substitute the STPS and check for proper operation.

6.

Is DTC present problem ? ▶ Substitute a known-good SRSCM, and check for proper operation. If the problem is corrected, replace SRSCM and then go to "Verification of Vehicle Repair" procedure. ▶ Substitute the SRS main harness and check for proper operation. If the problem is corrected, replace SRS main harness and then go to "Verification of Vehicle Repair" procedure. ▶ Substitute a known-good STPS, and check for proper operation. If the problem is corrected, replace STPS and then go to "Verification of Vehicle Repair" procedure.

Verification of Vehicle Repair

1.	Connect scantool and select "Diagnostic Trouble Codes(DTC)" mode.

2.	Using a scantool, clear the DTC.

3.	Operate the vehicle within DTC Enable conditions in General information.

4.	Are any DTC present ? ▶ Go to the applicable troubleshooting procedure. ▶ System is performing to specification at this time.