Skip to main content
SRS Symptom Troubleshooting - Faulty front seat belt reminder indicator

Faulty Front Seat Belt Reminder Indicator
NOTE: Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not latest, update the SRS unit software.
  1. Observe these precautions:
    • Unbuckle the right seat belt.
    • Unbuckle the left seat belt.
    • Make sure nothing is on or under the seat.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with the vehicle and the SRS unit. If it dose not communicate, troubleshoot the DLC circuit.
  1. From the Main Menu on the HDS, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select ‘‘SRS PSS'', and read the HDS indicated.
Is OFF indicated on the HDS?
YES -
Go to Step 8 .
NO -
Go to Step 6 .
  1. Disconnect the floor wire harness 3P connector (A) from the front passenger's seat sitting switch.
  1. From the Main Menu on the HDS, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select ‘‘SRS PSS'', and read the HDS indicated.
Is ON indicated on the HDS?
YES -
Short to ground in the floor wire harness; replace the faulty harness.■
NO -
Faulty front passenger's seat sitting switch.■
  1. Observe these precautions:
    • Unbuckle the right seat belt.
    • Unbuckle the left seat belt.
    • I make it the state that people more than 45 kg in weight sit down on in front passenger's seat.
  1. From the Main Menu on the HDS, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select ‘‘SRS PSS'', and read the HDS indicated.
Is ON indicated on the HDS?
YES -
Go to Step 10 .
NO -
Go to Step 11 .
  1. Check the front seat belt reminder indicator.
Does the front seat belt reminder indicator stay on?
YES -
Faulty gauge control module.■
NO -
Faulty SRS unit or poor connection at SRS unit connector B (39P) and SRS unit or poor connection at front passenger's seat belt sitting switch 3P connector and front passenger's seat sitting switch. Check the connection; if connection is OK and DTC is not indicated, replace the SRS unit.

  1. Disconnect the floor wire harness 3P connector (A) from the front passenger's seat sitting switch.
  1. Install a jumper wire between the No. 1 terminal and the No. 2 terminal of the floor wire harness 3P connector.
  1. From the Main Menu on the HDS, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select ‘‘SRS PSS'', and read the HDS indicated.
Is ON indicated on the HDS?
YES -
Faulty front passenger's seat sitting switch; replace the front seat cushion cover/pad.
NO -
Open in the floor wire harness; replace the faulty wire harness.■