DTC 54

DTC 54 - OPEN IN P SQUIB CIRCUIT




CIRCUIT DESCRIPTION


The P squib circuit consists of the center airbag sensor assembly and front passenger airbag assembly (squib). It causes the airbag to deploy when the airbag deployment conditions are satisfied. Diagnostic trouble code 54 is recorded when an open is detected in the P squib circuit.





DIAGNOSTIC CHART





WIRING DIAGRAM

Step 1:

Step 2:

Step 3:

Step 4:

INSPECTION PROCEDURES


SRS Warning Light System (Always lit up when ignition switch is LOCK position.)

CIRCUIT DESCRIPTION

The SRS warning light is located on the cluster finish panel.
When the supplemental restraint system is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch is turned from LOCK position to ACC or ON position, and then turns off automatically.

If there is a malfunction in the SRS, the SRS warning light lights up to inform the driver of the abnormality. When terminals Tc and E1 of the DLC1 or DLC2 are connected, the diagnostic trouble code is displayed by the blinking of the SRS warning light.





DIAGNOSTIC CHART


HINT: If the SRS warning light is always lit up with a DTC check procedure, perform Tc terminal circuit check procedure.





WIRING DIAGRAM





Does SRS Warning Light turn off?


Tc Terminal Circuit
CIRCUIT DESCRIPTION

By connecting terminals Tc and E1 of the DLC1 or DLC2, the center airbag sensor assembly is set in the diagnostic trouble code output mode. The diagnostic trouble codes are displayed by the blinking of the SRS warning light.

DIAGNOSTIC CHART

Troubleshooting for this system is different depending on whether the diagnostic trouble code is not displayed, SRS warning light is always lit up with a DTC check procedure or the diagnostic trouble code is displayed without a DTC check procedure. Confirm the problem symptoms first before selecting the appropriate troubleshooting procedure.





HINT: If the diagnostic trouble code is not displayed or SRS warning light is always lit up with a DTC check procedure, perform the following troubleshooting:





WIRING DIAGRAM


HINT: If the diagnostic trouble code is not displayed, perform the following troubleshooting:

Step 1:

Step 2:

Step 3:

Step 4:

Inspection Procedure


HINT: If the diagnostic trouble code is displayed without a DTC check procedure, perform the following troubleshooting





Check resistance between terminals