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DTC B1426 Malfunction of G-sensor inside front right side impact sensor
DTC B1436 Malfunction of G-sensor inside front left side impact sensor
 
 
cautionIf DTC B1426 or B1436 is set in SRS-ECU, be sure to diagnose the CAN bus line.
 
 
TROUBLE JUDGMENT
  • Analog G-sensor for side impact does not operate.
  • Characteristics of analog G-sensor for side impact are abnormal.
  • Output of analog G-sensor for side impact is abnormal.
 
 
PROBABLE CAUSES
  • Malfunction of right side impact sensor (DTC B1426)
  • Malfunction of left side impact sensor (DTC B1436)
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the scan tool ."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
 
STEP 2. Side impact sensor check.
(1) Check that the negative battery terminal is disconnected. If the negative battery terminal is connected, disconnect it.
(2) A side impact sensor is checked in the following way.
  • Replace the right side impact sensor {In case of DTC B1426 (Regardless of "Active" or "Stored" faults)} with the new part.
  • Replace the left side impact sensor {In case of DTC B1436 (Regardless of "Active" or "Stored" faults)} with the new part.
(3) Connect the negative battery terminal.
(4) After erasing the DTC memory, check the DTC again.
(5) Disconnect the negative battery terminal.
Is DTC B1426 or B1436 set?
Replace the SRS-ECU (Refer to ).
An intermittent malfunction is suspected (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).