B1397

DTC B1392 / B1393 / B1397 / B1398

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Troubleshooting


1. Was "Air Bag Diagnostic System Check" performed?
YES
Go to Step 2.
NO
Go to Air Bag Diagnostic System Check Air Bag Diagnostic System Check.
2. Floor harness open check
Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "L04" and "L43" connectors or "L05" and "L44" connectors.
Check the following points.
Resistance of "A1" and "A2" circuits (DTC B1392 / B1393): 1 or less
Resistance of "A3" and "A4" circuits (DTC B1397 / B1398): 1 or less
Special Tool

(A): 09932-76010

Are they in good condition?
YES
Go to Step 3.
NO
B1393: Replace floor harness.
3. Floor harness circuit check
Check the following points.
Resistance between "L04-11" and "L04-12" terminals (DTC B1392 / B1393): infinity
Resistance between "L05-11" and "L05-12" terminals (DTC B1397 / B1398): infinity
Special Tool

(A): 09932-76010

Are they in good condition?
YES
Go to Step 4.
NO
Replace floor harness.
4. Floor harness circuit check
Push engine switch to change ignition mode of keyless push start system to "ON".
Check the following points.
Resistance between each of "A1" and "A2" circuits and ground (DTC B1392 / B1393): infinity
Resistance between each of "A3" and "A4" circuits and ground (DTC B1397 / B1398): infinity
Special Tool

(A): 09932-76010

Are they in good condition?
YES
Go to Step 5.
NO
Replace floor harness.
5. Floor harness circuit check
Push engine switch to change ignition mode of keyless push start system to "ON".
Check the following points.
Voltage between each of "A1" and "A2" circuits and ground (DTC B1392 / B1393): 0 V
Voltage between each of "A3" and "A4" circuits and ground (DTC B1397 / B1398): 0 V
Special Tool

(A): 09932-76010

Are they in good condition?
YES
Go to Step 6.
NO
Replace floor harness.
6. Side air Bag Sensor (Rear) Check
Substitute a known-good side rear impact sensor and recheck DTC.
Is DTC detected?
YES
Substitute a known-good SDM and recheck DTC. SDM Removal and Installation
NO
End.

NOTE:

Upon completion of inspection and repair work, perform the following items.

- Reconnect all air bag system components and ensure all components are properly mounted.
- Clear DTCs, referring to DTC Clearance DTC Clearance
if any DTC is detected.
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check
to confirm that the trouble has been solved.