Supplemental Restraint System (Diagnostic Codes & Symptom Tests): Overview Lexus HS I

DESCRIPTION

The center airbag sensor assembly consists of the G sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.

If the center airbag sensor assembly receives signals from the deceleration sensor, it determines whether the airbag squib and pretensioner squib should be activated.

DTC B1000/31 is stored when a malfunction is detected in the center airbag sensor assembly.

The front airbag sensor RH circuit consists of the center airbag sensor assembly and front airbag sensor RH.

The front airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.

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1. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and front airbag sensor RH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire. Check that the connector terminals are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE WIRE HARNESS OK: Go to next step
2. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN) Connect the connectors that link the engine room main wire and instrument panel wire. Using SST, connect terminals 29 (+SR) and 27 (-SR) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A37-2 (+SR) - A37-1 (-SR) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Center Airbag Sensor Assembly) *4 Front view of wire harness connector (to Front Airbag Sensor RH) *5 Connector B *6 Connector E NG --> See step 7 OK: Go to next step
3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A37-2 (+SR) - A37-1 (-SR) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor RH) *4 Connector E NG --> See step 8 OK: Go to next step
4. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A37-2 (+SR) - Body ground Power switch on (IG) Below 1 V A37-1 (-SR) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor RH) *4 Connector E NG --> See step 9 OK: Go to next step
5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A37-2 (+SR) - Body ground Always 1 Mohms or higher A37-1 (-SR) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor RH) *4 Connector E NG --> See step 10 OK: Go to next step
6. CHECK FRONT AIRBAG SENSOR RH Connect the connector to the center airbag sensor assembly. Interchange the front airbag sensor LH with RH and connect the connectors. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1603/83, B1608/84, B1612/83, B1613/83, B1617/84 and B1618/84 are not output. A DTC B1608/84, B1617/84 or B1618/84 is output. B DTC B1603/83, B1612/83 or B1613/83 is output. C TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1603/83, B1608/84, B1612/83, B1613/83, B1617/84 and B1618/84 may be output at this time, but they are not related to this check. C --> See step 11 B --> See step 12 A --> See step 13
7. CHECK INSTRUMENT PANEL WIRE (OPEN) Disconnect the instrument panel wire connector from the engine room main wire. HINT: SST has already been inserted into connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF8-2 (+SR) - AF8-1 (-SR) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Center Airbag Sensor Assembly) *6 Front view of wire harness connector (to Engine Room Main Wire) *7 Connector B *8 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
8. CHECK INSTRUMENT PANEL WIRE (SHORT) Disconnect the instrument panel wire connector from the engine room main wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF8-2 (+SR) - AF8-1 (-SR) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
9. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the instrument panel wire connector from the engine room main wire. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition AF8-2 (+SR) - Body ground Power switch on (IG) Below 1 V AF8-1 (-SR) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) Disconnect the instrument panel wire connector from the engine room main wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF8-2 (+SR) - Body ground Always 1 Mohms or higher AF8-1 (-SR) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
11. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)
12. REPLACE FRONT AIRBAG SENSOR RH. Refer to «REMOVAL»(ref-398090-S25094851002011051600000)
13. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)

The front airbag sensor LH circuit consists of the center airbag sensor assembly and front airbag sensor LH.

The front airbag sensor LH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected in the front airbag sensor LH circuit.

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1. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and front airbag sensor LH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and front airbag sensor LH. Also disconnect the connectors that link the engine room main wire and instrument panel wire. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE WIRE HARNESS OK: Go to next step
2. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (OPEN) Connect the connectors that link the engine room main wire and instrument panel wire. Using SST, connect terminals 30 (+SL) and 28 (-SL) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A19-2 (+SL) - A19-1 (-SL) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Center Airbag Sensor Assembly) *4 Front view of wire harness connector (to Front Airbag Sensor LH) *5 Connector B *6 Connector E NG --> See step 7 OK: Go to next step
3. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A19-2 (+SL) - A19-1 (-SL) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor LH) *4 Connector E NG --> See step 8 OK: Go to next step
4. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A19-2 (+SL) - Body ground Power switch on (IG) Below 1 V A19-1 (-SL) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor LH) *4 Connector E NG --> See step 9 OK: Go to next step
5. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A19-2 (+SL) - Body ground Always 1 Mohms or higher A19-1 (-SL) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Front Airbag Sensor LH) *4 Connector E NG --> See step 10 OK: Go to next step
6. CHECK FRONT AIRBAG SENSOR LH Connect the connector to the center airbag sensor assembly. Interchange the front airbag sensor RH with LH and connect the connectors. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1603/83, B1608/84, B1612/83, B1613/83, B1617/84 and B1618/84 are not output. A DTC B1608/84, B1617/84 or B1618/84 is output. B DTC B1603/83, B1612/83 or B1613/83 is output. C TEXT IN ILLUSTRATION *1 Front Airbag Sensor RH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1603/83, B1608/84, B1612/83, B1613/83, B1617/84 and B1618/84, may be output at this time, but they are not related to this check. C --> See step 11 B --> See step 12 A --> See step 13
7. CHECK INSTRUMENT PANEL WIRE (OPEN) Disconnect the instrument panel wire connector from the engine room main wire. HINT: SST has already been inserted into connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF4-1 (+SL) - AF4-2 (-SL) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Center Airbag Sensor Assembly) *6 Front view of wire harness connector (to Engine Room Main Wire) *7 Connector B *8 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
8. CHECK INSTRUMENT PANEL WIRE (SHORT) Disconnect the instrument panel wire connector from the engine room main wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF4-1 (+SL) - AF4-2 (-SL) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
9. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the instrument panel wire connector from the engine room main wire. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition AF4-1 (+SL) - Body ground Power switch on (IG) Below 1 V AF4-2 (-SL) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) Disconnect the instrument panel wire connector from the engine room main wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AF4-1 (+SL) - Body ground Always 1 Mohms or higher AF4-2 (-SL) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Engine Room Main Wire *4 Instrument Panel Wire *5 Front view of wire harness connector (to Engine Room Main Wire) *6 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> REPLACE ENGINE ROOM MAIN WIRE
11. REPLACE FRONT AIRBAG SENSOR LH. Refer to «REMOVAL»(ref-398090-S25094851002011051600000)
12. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)
13. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)

The front airbag sensor RH circuit consists of the center airbag sensor assembly and front airbag sensor RH.

The front airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1610/13 is stored when a malfunction is detected in the front airbag sensor RH.

The front airbag sensor LH circuit consists of the center airbag sensor assembly and front airbag sensor LH.

The front airbag sensor LH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1615/14 is stored when a malfunction is detected in the front airbag sensor LH.

The front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit) is composed of the center airbag sensor assembly, front airbag sensor RH and front airbag sensor LH.

The front airbag sensor RH and front airbag sensor LH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B161A/8A is stored when a malfunction is detected in the front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit).

Scheme 194

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.

The side airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1620/21 is stored when a malfunction is detected in the side airbag sensor RH.

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.

The side airbag sensor RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected for the side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).

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1. CHECK PRESENT DTC Turn the power switch on (IG), and wait for at least 60 seconds. Check for present DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to Present DTC B1623 or B1643 is output. A Present DTC B1642 or 81 is output. B Present DTC B1632 or B1633 is output. C Present DTC B1622 is output. D Present DTC B1622, B1623, B1632, B1633, B1642, B1643 or 81 is not output. E HINT: DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the power switch off and then on (IG) again. Codes other than DTCs B1622, B1623, B1632, B1633, B1642, B1643 and 81 may be output at this time, but they are not related to this check. E --> See step 22 D --> See step 21 C --> See step 14 B --> See step 3 A: Go to next step
2. CHECK HISTORY DTC Turn the power switch on (IG), and wait for at least 60 seconds. Check for history DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to History DTC B1622 or B1632 is not output. A History DTC B1632 is output. B History DTC B1622 is output. C HINT: Codes other than history DTCs B1622 and B1632 may be output at this time, but they are not related to this check. C --> See step 21 B --> See step 14 A: Go to next step
3. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
4. CHECK NO. 2 FLOOR WIRE (OPEN) Using SST, connect terminals 17 (BBR+) and 18 (BBR-) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-4 (BBR+) - M3-3 (BBR-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Center Airbag Sensor Assembly) *5 Front view of wire harness connector (to Side Airbag Sensor RH) *6 Connector B *7 Connector C - - NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
5. CHECK NO. 2 FLOOR WIRE (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-4 (BBR+) - M3-3 (BBR-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
6. CHECK NO. 2 FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition M3-4 (BBR+) - Body ground Power switch on (IG) Below 1 V M3-3 (BBR-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
7. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-4 (BBR+) - Body ground Always 1 Mohms or higher M3-3 (BBR-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
8. CHECK NO. 2 FLOOR WIRE (OPEN) Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector C. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - M3-2 (BCR-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Front view of wire harness connector (to Rear Airbag Sensor RH) *6 Connector B *7 Connector C - - NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
9. CHECK NO. 2 FLOOR WIRE (SHORT) Disconnect SST from connector C. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - M3-2 (BCR-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
10. CHECK NO. 2 FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition M3-1 (BCR+) - Body ground Power switch on (IG) Below 1 V M3-2 (BCR-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
11. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - Body ground Always 1 Mohms or higher M3-2 (BCR-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
12. CHECK SIDE AIRBAG SENSOR RH Connect the connectors to the rear airbag sensor RH and center airbag sensor assembly. Interchange the side airbag sensor LH with RH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTC B1623, B1642, B1643 or 81 is output. A DTC B1628, B1647, B1648 or 82 is output. B DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 are not output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check. C --> See step 22 B --> See step 23 A: Go to next step
13. CHECK REAR AIRBAG SENSOR RH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Return the side airbag sensor LH and RH to their original positions and connect the connectors to them. Interchange the rear airbag sensor LH with RH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 are not output. A DTC B1623, B1642, B1643 or 81 is output. B DTC B1628, B1647, B1648 or 82 is output. C TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor RH HINT: Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check. C --> See step 24 B --> See step 25 A --> See step 22
14. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the side airbag sensor RH and rear airbag sensor RH. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the side airbag sensor RH and rear airbag sensor RH. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
15. CHECK NO. 2 FLOOR WIRE (OPEN) Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector C. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - M3-2 (BCR-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Front view of wire harness connector (to Rear Airbag Sensor RH) *6 Connector B *7 Connector C - - NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
16. CHECK NO. 2 FLOOR WIRE (SHORT) Disconnect SST from connector C. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - M3-2 (BCR-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
17. CHECK NO. 2 FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition M3-1 (BCR+) - Body ground Power switch on (IG) Below 1 V M3-2 (BCR-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
18. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M3-1 (BCR+) - Body ground Always 1 Mohms or higher M3-2 (BCR-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH *3 No. 2 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor RH) *5 Connector B NG --> REPLACE NO. 2 FLOOR WIRE OK: Go to next step
19. CHECK SIDE AIRBAG SENSOR RH Connect the connector to the rear airbag sensor RH. Interchange the side airbag sensor LH with RH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTC B1632 or B1633 is output. A DTC B1637 or B1638 is output. B DTCs B1632 or B1633 and B1637 or B1638 are not output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check. C --> See step 22 B --> See step 23 A: Go to next step
20. CHECK REAR AIRBAG SENSOR RH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Return the side airbag sensor LH and RH to their original positions and connect the connectors to them. Interchange the rear airbag sensor LH with RH and connect the connectors. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1632 or B1633 and B1637 or B1638 are not output. A DTC B1632 or B1633 is output. B DTC B1637 or B1638 is output. C TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor RH HINT: Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check. C --> See step 24 B --> See step 25 A --> See step 22
21. CHECK SIDE AIRBAG SENSOR RH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Interchange the side airbag sensor LH with RH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1622 and B1627 are not output. A DTC B1622 is output. B DTC B1627 is output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1622 and B1627 may be output at this time, but they are not related to this check. C --> See step 23 B --> See step 25 A --> See step 22
22. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)
23. REPLACE SIDE AIRBAG SENSOR RH. Refer to «REMOVAL»(ref-398090-S21372607032011051600000)
24. REPLACE REAR AIRBAG SENSOR RH. Refer to «REMOVAL»(ref-398090-S10483870202011051600000)
25. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)

The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, side airbag sensor LH and rear airbag sensor LH.

The side airbag sensor LH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1625/22 is stored when a malfunction is detected in the side airbag sensor LH.

The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, side airbag sensor LH and rear airbag sensor LH.

The side airbag sensor LH and rear airbag sensor LH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected in the side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH).

Scheme 201

Scheme 202

Scheme 203

Scheme 204

Scheme 205

1. CHECK PRESENT DTC Turn the power switch on (IG), and wait for at least 60 seconds. Check for present DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to Present DTC B1628 or B1648 is output. A Present DTC B1647 or 81 is output. B Present DTC B1637 or B1638 is output. C Present DTC B1627 is output. D Present DTC B1627, B1628, B1637, B1638, B1647, B1648 or 82 is not output. E HINT: DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the power switch off and then on (IG) again. Codes other than DTCs B1627, B1628, B1637, B1638, B1647, B1648 and 82 may be output at this time, but they are not related to this check. E --> See step 22 D --> See step 21 C --> See step 14 B --> See step 3 A: Go to next step
2. CHECK HISTORY DTC Turn the power switch on (IG), and wait for at least 60 seconds. Check for history DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to History DTC B1627 or B1637 is not output. A History DTC B1637 is output. B History DTC B1627 is output. C HINT: Codes other than history DTCs B1627 and B1637 may be output at this time, but they are not related to this check. C --> See step 21 B --> See step 14 A: Go to next step
3. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly, side airbag sensor LH and rear airbag sensor LH. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly, side airbag sensor LH and rear airbag sensor LH. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE FLOOR WIRE OK: Go to next step
4. CHECK FLOOR WIRE (OPEN) Using SST, connect terminals 24 (BBL+) and 23 (BBL-) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-4 (BBL+) - L3-3 (BBL-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Center Airbag Sensor Assembly) *5 Front view of wire harness connector (to Side Airbag Sensor LH) *6 Connector B *7 Connector C - - NG --> REPLACE FLOOR WIRE OK: Go to next step
5. CHECK FLOOR WIRE (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-4 (BBL+) - L3-3 (BBL-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
6. CHECK FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L3-4 (BBL+) - Body ground Power switch on (IG) Below 1 V L3-3 (BBL-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
7. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-4 (BBL+) - Body ground Always 1 Mohms or higher L3-3 (BBL-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Side Airbag Sensor LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
8. CHECK FLOOR WIRE (OPEN) Using SST, connect terminals 2 (BCL+) and 1 (BCL-) of connector C. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - L3-2 (BCL-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Front view of wire harness connector (to Rear Airbag Sensor LH) *6 Connector B *7 Connector C - - NG --> REPLACE FLOOR WIRE OK: Go to next step
9. CHECK FLOOR WIRE (SHORT) Disconnect SST from connector C. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - L3-2 (BCL-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
10. CHECK FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L3-1 (BCL+) - Body ground Power switch on (IG) Below 1 V L3-2 (BCL-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
11. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - Body ground Always 1 Mohms or higher L3-2 (BCL-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
12. CHECK SIDE AIRBAG SENSOR LH Connect the connectors to the rear airbag sensor LH and center airbag sensor assembly. Interchange the side airbag sensor RH with LH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTC B1628, B1647, B1648 or 82 is output. A DTC B1623, B1642, B1643 or 81 is output. B DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 are not output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check. C --> See step 22 B --> See step 23 A: Go to next step
13. CHECK REAR AIRBAG SENSOR LH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Return the side airbag sensor RH and LH to their original positions and connect the connectors to them. Interchange the rear airbag sensor RH with LH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 are not output. A DTC B1628, B1647, B1648 or 82 is output. B DTC B1623, B1642, B1643 or 81 is output. C TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor LH HINT: Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check. C --> See step 24 B --> See step 25 A --> See step 22
14. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the side airbag sensor LH and rear airbag sensor LH. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the side airbag sensor LH and rear airbag sensor LH. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE FLOOR WIRE OK: Go to next step
15. CHECK FLOOR WIRE (OPEN) Using SST, connect terminals 2 (BCL+) and 1 (BCL-) of connector C. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - L3-2 (BCL-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Front view of wire harness connector (to Rear Airbag Sensor LH) *6 Connector B *7 Connector C - - NG --> REPLACE FLOOR WIRE OK: Go to next step
16. CHECK FLOOR WIRE (SHORT) Disconnect SST from connector C. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - L3-2 (BCL-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
17. CHECK FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L3-1 (BCL+) - Body ground Power switch on (IG) Below 1 V L3-2 (BCL-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
18. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L3-1 (BCL+) - Body ground Always 1 Mohms or higher L3-2 (BCL-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH *3 Floor Wire *4 Front view of wire harness connector (to Side Airbag Sensor LH) *5 Connector B NG --> REPLACE FLOOR WIRE OK: Go to next step
19. CHECK SIDE AIRBAG SENSOR LH Connect the connector to the rear airbag sensor LH. Interchange the side airbag sensor RH with LH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTC B1637 or B1638 is output. A DTC B1632 or B1633 is output. B DTCs B1632 or B1633 and B1637 or B1638 are not output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check. C --> See step 22 B --> See step 23 A: Go to next step
20. CHECK REAR AIRBAG SENSOR LH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Return the side airbag sensor RH and LH to their original positions and connect the connectors to them. Interchange the rear airbag sensor RH with LH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1632 or B1633 and B1637 or B1638 are not output. A DTC B1637 or B1638 is output. B DTC B1632 or B1633 is output. C TEXT IN ILLUSTRATION *1 Rear Airbag Sensor RH *2 Side Airbag Sensor LH HINT: Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check. C --> See step 24 B --> See step 25 A --> See step 22
21. CHECK SIDE AIRBAG SENSOR LH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Interchange the side airbag sensor RH with LH and connect the connectors to them. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Result Result Proceed to DTCs B1622 and B1627 are not output. A DTC B1627 is output. B DTC B1622 is output. C TEXT IN ILLUSTRATION *1 Side Airbag Sensor RH *2 Center Airbag Sensor Assembly HINT: Codes other than DTCs B1622 and B1627 may be output at this time, but they are not related to this check. C --> See step 23 B --> See step 25 A --> See step 22
22. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)
23. REPLACE SIDE AIRBAG SENSOR LH. Refer to «REMOVAL»(ref-398090-S21372607032011051600000)
24. REPLACE REAR AIRBAG SENSOR LH. Refer to «REMOVAL»(ref-398090-S10483870202011051600000)
25. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.

The rear airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1630/23 is stored when a malfunction is detected in the rear airbag sensor RH.

The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, side airbag sensor LH and rear airbag sensor LH.

The rear airbag sensor LH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1635/24 is stored when a malfunction is detected in the rear airbag sensor LH.

The occupant classification system circuit consists of the center airbag sensor assembly and occupant classification system.

If the center airbag sensor assembly receives signals from the occupant classification ECU, it determines whether the front passenger airbag, front passenger side knee airbag and front seat belt pretensioner RH should be operated.

DTC B1650/32 is stored when a malfunction is detected in the occupant classification system circuit.

Scheme 206

Scheme 207

Scheme 208

Scheme 209

Scheme 210

1. CHECK DTC (OCCUPANT CLASSIFICATION ECU) Turn the power switch on (IG). Using the Techstream, check for DTCs of the occupant classification ECU. Refer to «DTC CHECK / CLEAR»(ref-398103-S42135564202011051600000) . NG --> See step 12 OK: Go to next step
2. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and occupant classification ECU. Also check that the connectors that link the front seat wire RH and No. 2 floor wire are properly connected. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and occupant classification ECU. Also disconnect the connectors that link the front seat wire RH and No. 2 floor wire. Check that the connector terminals are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE WIRE HARNESS OK: Go to next step
3. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (OPEN) Connect the connectors that link the front seat wire RH and No. 2 floor wire. Using SST, connect terminals 16 (FSR+) and 24 (FSR-) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S14-8 (FSR+) - S14-4 (FSR-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Center Airbag Sensor Assembly) *4 Front view of wire harness connector (to Occupant Classification ECU) *5 Connector B *6 Connector E NG --> See step 7 OK: Go to next step
4. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S14-8 (FSR+) - S14-4 (FSR-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Occupant Classification ECU) *4 Connector E NG --> See step 8 OK: Go to next step
5. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition S14-8 (FSR+) - Body ground Power switch on (IG) Below 1 V S14-4 (FSR-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Occupant Classification ECU) *4 Connector E NG --> See step 9 OK: Go to next step
6. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S14-8 (FSR+) - Body ground Always 1 Mohms or higher S14-4 (FSR-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Occupant Classification ECU) *4 Connector E HINT: After replacing the center airbag sensor assembly, check for DTCs of the center airbag sensor assembly. If DTC B1650/32 is detected, replace the occupant classification ECU. Refer to «REMOVAL»(ref-398090-S12538163052011051600000) and perform "zero point calibration" and "sensitivity check" of the occupant classification system. Refer to «INITIALIZATION»(ref-398103-S03414413432011051600000) . NG --> See step 10 OK --> See step 11
7. CHECK NO. 2 FLOOR WIRE (OPEN) Disconnect the front seat wire RH from the No. 2 floor wire. HINT: SST has already been inserted into connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition MS2-6 (FSR+) - MS2-7 (FSR-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front Seat Wire RH *4 No. 2 Floor Wire *5 Front view of wire harness connector (to Center Airbag Sensor Assembly) *6 Front view of wire harness connector (to Front Seat Wire RH) *7 Connector B *8 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK --> REPLACE FRONT SEAT WIRE RH
8. CHECK NO. 2 FLOOR WIRE (SHORT) Disconnect the front seat wire RH from the No. 2 floor wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition MS2-6 (FSR+) - MS2-7 (FSR-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front Seat Wire RH *4 No. 2 Floor Wire *5 Front view of wire harness connector (to Front Seat Wire RH) *6 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK --> REPLACE FRONT SEAT WIRE RH
9. CHECK NO. 2 FLOOR WIRE (SHORT TO B+) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the front seat wire RH from the No. 2 floor wire. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition MS2-6 (FSR+) - Body ground Power switch on (IG) Below 1 V MS2-7 (FSR-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front Seat Wire RH *4 No. 2 Floor Wire *5 Front view of wire harness connector (to Front Seat Wire RH) *6 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK --> REPLACE FRONT SEAT WIRE RH
10. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) Disconnect the front seat wire RH from the No. 2 floor wire. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition MS2-6 (FSR+) - Body ground Always 1 Mohms or higher MS2-7 (FSR-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Occupant Classification ECU *2 Center Airbag Sensor Assembly *3 Front Seat Wire RH *4 No. 2 Floor Wire *5 Front view of wire harness connector (to Front Seat Wire RH) *6 Connector C NG --> REPLACE NO. 2 FLOOR WIRE OK --> REPLACE FRONT SEAT WIRE RH
11. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)
12. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-398103-S07988149292011051600000)

The seat position sensor circuit consists of the center airbag sensor assembly, front seat inner belt assembly LH and seat position sensor.

DTC B1653/35 is stored when a malfunction is detected in the seat position sensor circuit.

Scheme 211

Scheme 212

Scheme 213

Scheme 214

Scheme 215

Scheme 216

1. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly, front seat inner belt assembly LH and seat position sensor. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly, front seat inner belt assembly LH and seat position sensor. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE WIRE HARNESS OK: Go to next step
2. CHECK SEAT POSITION SENSOR CIRCUIT (OPEN) Connect the connectors to the front seat inner belt assembly LH and floor wire. Using SST, connect terminals 9 (LSP+) and 17 (LSP-) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting the wire. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (LSP+) - 1 (LSP-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Center Airbag Sensor Assembly) *4 Front view of wire harness connector (to Seat Position Sensor) *5 Connector B *6 Connector E NG --> See step 10 OK: Go to next step
3. CHECK SEAT POSITION SENSOR CIRCUIT (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (LSP+) - 1 (LSP-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Seat Position Sensor) *4 Connector E NG --> See step 11 OK: Go to next step
4. CHECK SEAT POSITION SENSOR CIRCUIT (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 2 (LSP+) - Body ground Power switch on (IG) Below 1 V 1 (LSP-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Seat Position Sensor) *4 Connector E NG --> See step 12 OK: Go to next step
5. CHECK SEAT POSITION SENSOR CIRCUIT (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (LSP+) - Body ground Always 1 Mohms or higher 1 (LSP-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front view of wire harness connector (to Seat Position Sensor) *4 Connector E NG --> See step 13 OK: Go to next step
6. CHECK SEAT POSITION SENSOR Connect the connectors to the center airbag sensor assembly and seat position sensor. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1653/35 is not output. TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1653/35 may be output at this time, but they are not related to this check. NG --> See step 7 OK --> See step 9
7. REPLACE SEAT POSITION SENSOR Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Replace the seat position sensor with a known good one. Refer to «REMOVAL»(ref-398090-S39890107592011051600000) . HINT: Perform the following inspection using known good parts from another vehicle if possible. NEXT: Go to next step
8. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1653/35 is not output. TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1653/35 may be output at this time, but they are not related to this check. NG --> See step 14 OK --> END
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)
10. CHECK FLOOR WIRE (OPEN) Disconnect the floor wire from the front seat inner belt assembly LH. HINT: SST has already been inserted into connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-1 (LSP+) - L16-3 (LSP-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front Seat Inner Belt Assembly LH *4 Floor Wire *5 Front view of wire harness connector (to Center Airbag Sensor Assembly) *6 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *7 Connector B *8 Connector C NG --> REPLACE FLOOR WIRE OK --> See step 15
11. CHECK FLOOR WIRE (SHORT) Disconnect the floor wire from the front seat belt inner belt assembly LH. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-1 (LSP+) - L16-3 (LSP-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front Seat Inner Belt Assembly LH *4 Floor Wire *5 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *6 Connector C NG --> REPLACE FLOOR WIRE OK --> See step 15
12. CHECK FLOOR WIRE (SHORT TO B+) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the floor wire from the front seat inner belt assembly LH. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L16-1 (LSP+) - Body ground Power switch on (IG) Below 1 V L16-3 (LSP-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front Seat Inner Belt Assembly LH *4 Floor Wire *5 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *6 Connector C NG --> REPLACE FLOOR WIRE OK --> See step 15
13. CHECK FLOOR WIRE (SHORT TO GROUND) Disconnect the floor wire from the front seat inner belt assembly LH. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-1 (LSP+) - Body ground Always 1 Mohms or higher L16-3 (LSP-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Seat Position Sensor *2 Center Airbag Sensor Assembly *3 Front Seat Inner Belt Assembly LH *4 Floor Wire *5 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *6 Connector C NG --> REPLACE FLOOR WIRE OK --> See step 15
14. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)
15. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH. Refer to «REMOVAL»(ref-398091-S30529843822011051600000)

The seat belt buckle switch LH circuit consists of the center airbag sensor assembly and front seat inner belt assembly LH.

DTC B1656/38 is stored when a malfunction is detected in the seat belt buckle switch LH circuit.

Scheme 217

Scheme 218

Scheme 219

1. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and front seat inner belt assembly LH. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and front seat inner belt assembly LH. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE FLOOR WIRE OK: Go to next step
2. CHECK FLOOR WIRE (OPEN) Using SST, connect terminals 10 (LBE+) and 18 (LBE-) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting the wire. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-2 (LBE+) - L16-4 (LBE-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Center Airbag Sensor Assembly) *5 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *6 Connector B *7 Connector C - - NG --> REPLACE FLOOR WIRE OK: Go to next step
3. CHECK FLOOR WIRE (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-2 (LBE+) - L16-4 (LBE-) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
4. CHECK FLOOR WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L16-2 (LBE+) - Body ground Power switch on (IG) Below 1 V L16-4 (LBE-) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
5. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L16-2 (LBE+) - Body ground Always 1 Mohms or higher L16-4 (LBE-) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly *3 Floor Wire *4 Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) *5 Connector C NG --> REPLACE FLOOR WIRE OK: Go to next step
6. CHECK FRONT SEAT INNER BELT ASSEMBLY LH Connect the connectors to the center airbag sensor assembly and front seat inner belt assembly LH. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1656/38 is not output. TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1656/38 may be output at this time, but they are not related to this check. NG --> See step 7 OK --> See step 9
7. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Replace the front seat inner belt assembly LH with a known good one. Refer to «REMOVAL»(ref-398091-S30529843822011051600000) . HINT: Perform the following inspection using known good parts from another vehicle if possible. NEXT: Go to next step
8. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1656/38 is not output. TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly LH *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1656/38 may be output at this time, but they are not related to this check. NG --> See step 10 OK --> END
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)
10. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)

The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor assembly and telltale light assembly (passenger airbag ON/OFF indicator).

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front passenger side knee airbag, front seat side airbag RH and front seat outer belt RH.

DTC B1660/43 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

Scheme 220

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

Scheme 226

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION Turn the power switch on (IG). Check the passenger airbag ON/OFF indicator operation. HINT: Refer to the normal condition of the passenger airbag ON/OFF indicator. Refer to «DIAGNOSIS SYSTEM»(ref-398246-S08284640642011051600000) . Result ON/OFF Indicator Illumination Proceed to Always ON A OFF B B --> See step 9 A: Go to next step
2. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and telltale light assembly. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and telltale light assembly. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR Connect the connector to the telltale light assembly. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Check the passenger airbag ON/OFF indicator operation. OK The passenger airbag ON/OFF indicator does not come on. NG --> See step 5 OK: Go to next step
4. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the connector to the center airbag sensor assembly. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1660/43 is not output. TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1660/43 may be output at this time, but they are not related to this check. NG --> See step 17 OK --> See step 18
5. CHECK INSTRUMENT PANEL WIRE (OPEN) Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Disconnect the connector from the telltale light assembly. Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting the wire. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - F74-10 (P-AB) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Center Airbag Sensor Assembly) *5 Front view of wire harness connector (to Telltale Light Assembly) *6 Connector B *7 Connector C - - NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
6. CHECK INSTRUMENT PANEL WIRE (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - F74-10 (P-AB) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
7. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - Body ground Always 1 Mohms or higher F74-10 (P-AB) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
8. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F74-9 (PAON) - Body ground Power switch on (IG) Below 1 V F74-10 (P-AB) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK --> See step 17
9. CHECK CONNECTORS Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Check that the connectors are properly connected to the center airbag sensor assembly and telltale light assembly. OK The connectors are properly connected. HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection. Disconnect the connectors from the center airbag sensor assembly and telltale light assembly. Check that the terminals of connectors are not damaged. OK The terminals are not deformed or damaged. NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
10. CHECK INSTRUMENT PANEL WIRE (OPEN) Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B. NOTE: Do not forcibly insert SST into the terminals of the connector when connecting the wire. SST: 09843-18040 Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - F74-10 (P-AB) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Center Airbag Sensor Assembly) *5 Front view of wire harness connector (to Telltale Light Assembly) *6 Connector B *7 Connector C - - NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
11. CHECK INSTRUMENT PANEL WIRE (SHORT) Disconnect SST from connector B. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - F74-10 (P-AB) Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
12. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F74-9 (PAON) - Body ground Always 1 Mohms or higher F74-10 (P-AB) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
13. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F74-9 (PAON) - Body ground Power switch on (IG) Below 1 V F74-10 (P-AB) - Body ground Power switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Telltale Light Assembly *2 Center Airbag Sensor Assembly *3 Instrument Panel Wire *4 Front view of wire harness connector (to Telltale Light Assembly) *5 Connector C NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
14. CHECK TELLTALE LIGHT ASSEMBLY (SOURCE VOLTAGE) Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F74-7 (B) - Body ground Power switch on (IG) 10 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Telltale Light Assembly) NG --> REPLACE WIRE HARNESS OR BATTERY OK: Go to next step
15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Connect the connector to the telltale light assembly. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG). Check the indicator according to the conditions in the table below. Result Tester Connection Switch Condition Specified Condition F34-23 (PAON) - Body ground Power switch on (IG) "ON" comes on F34-17 (P-AB) - Body ground Power switch on (IG) "OFF" comes on TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Center Airbag Sensor Assembly) NG --> See step 19 OK: Go to next step
16. CHECK CENTER AIRBAG SENSOR ASSEMBLY Turn the power switch off. Disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. Connect the connector to the center airbag sensor assembly. Connect the cable to the negative (-) battery terminal. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in the memory. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-398246-S01125415292011051600000) . OK DTC B1660/43 is not output. TEXT IN ILLUSTRATION *1 Airbag Cut-off Indicator Light *2 Center Airbag Sensor Assembly HINT: Codes other than DTC B1660/43 may be output at this time, but they are not related to this check. NG --> See step 17 OK --> See step 18
17. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)
18. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-398089-S18270818032011051600000)
19. REPLACE TELLTALE LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-398090-S19308897222011051600000)

1. The driver side squib circuit consists of the center airbag sensor assembly, spiral cable and steering pad.
2. The circuit instructs SRS to deploy when deployment conditions are met.
3. These DTCs are stored when a malfunction is detected in the driver side squib circuit.

Scheme 227

The front passenger side squib circuit consists of the center airbag sensor assembly and front passenger airbag assembly.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front passenger side squib circuit.

Scheme 228

1. The driver side squib 2nd step circuit consists of the center airbag sensor assembly, spiral cable and steering pad.
2. The circuit instructs SRS to deploy when deployment conditions are met.
3. These DTCs are stored when a malfunction is detected in the driver side squib 2nd step circuit.

Scheme 229

The front passenger side squib 2nd step circuit consists of the center airbag sensor assembly and front passenger airbag assembly.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front passenger side squib 2nd step circuit.

Scheme 230

The front side squib RH circuit consists of the center airbag sensor assembly and front seat side airbag assembly RH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front side squib RH circuit.

Scheme 231

The front side squib LH circuit consists of the center airbag sensor assembly and front seat side airbag assembly LH.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front side squib LH circuit.

Scheme 232

The curtain shield squib RH circuit consists of the center airbag sensor assembly and curtain shield airbag assembly RH.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the curtain shield squib RH circuit.

Scheme 233

The curtain shield squib LH circuit consists of the center airbag sensor assembly and curtain shield airbag assembly LH.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the curtain shield squib LH circuit.

Scheme 234

The rear side squib RH circuit consists of the center airbag sensor assembly and rear seat side airbag assembly RH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the rear side squib RH circuit.

Scheme 235

The rear side squib LH circuit consists of the center airbag sensor assembly and rear seat side airbag assembly LH.

The circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the rear side squib LH circuit.

Scheme 236

The driver side knee airbag squib circuit consists of the center airbag sensor assembly and driver side knee airbag assembly.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the driver side knee airbag squib circuit.

Scheme 237

The front passenger side knee airbag squib circuit consists of the center airbag sensor assembly and front passenger side knee airbag assembly.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front passenger side knee airbag squib circuit.

Scheme 238

The front pretensioner squib RH circuit consists of the center airbag sensor assembly and front seat outer belt assembly RH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front pretensioner squib RH circuit.

Scheme 239

The front pretensioner squib LH circuit consists of the center airbag sensor assembly and front seat outer belt assembly LH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front pretensioner squib LH circuit.

Scheme 240

The rear pretensioner squib RH circuit consists of the center airbag sensor assembly and rear seat outer belt assembly RH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the rear pretensioner squib RH circuit.

Scheme 241

The rear pretensioner squib LH circuit consists of the center airbag sensor assembly and rear seat outer belt assembly LH.

This circuit instructs SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the rear pretensioner squib LH circuit.

Scheme 242

The SRS warning light is located on the combination meter assembly.

When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the power switch is turned from off to on (IG), and then goes off automatically.

If there is a malfunction in the SRS, the SRS warning light comes on to inform the driver of a problem.

When terminals TC and CG of the DLC3 are connected, the DTC is displayed by blinking of the SRS warning light.

The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the center airbag sensor assembly in case the source voltage drops.

When the auxiliary battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the voltage of the SRS to normal voltage. In addition, when the voltage drops, the SRS waning light will illuminate.

A malfunction in this circuit is not stored in the center airbag sensor assembly. The SRS warning light automatically goes off when the source voltage returns to normal.

The signal to illuminate the SRS warning light is transmitted from the center airbag sensor assembly to the combination meter assembly through the CAN communication system.

Scheme 243

The SRS warning light is located on the combination meter assembly.

When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the power switch is turned from off to on (IG), and then goes off automatically.

If there is a malfunction in the SRS, the SRS warning light comes on to inform the driver of a problem.

When terminals TC and CG of the DLC3 are connected, the DTC is displayed by blinking of the SRS warning light.

The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the center airbag sensor assembly in case the source voltage drops.

When the auxiliary battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the voltage of the SRS to normal voltage.

A malfunction in this circuit is not stored in the center airbag sensor assembly. The SRS warning light automatically goes off when the source voltage returns to normal.

The signal to illuminate the SRS warning light is transmitted from the center airbag sensor assembly to the combination meter assembly through the CAN communication system.

DTC output mode is set by connecting terminals TC and CG of the DLC3.

DTCs are displayed by blinking of the SRS warning light.

HINT

1. When each warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
2. A DTC output mode signal is transmitted through the CAN communication system to each ECU including the center airbag sensor assembly. Thus when all systems do not enter DTC output mode, there may be an hybrid vehicle control ECU malfunction.

Scheme 244

Scheme 245

Scheme 246

Scheme 247

1. CHECK WIRE HARNESS (TC OF DLC3 - TC OF HYBRID VEHICLE CONTROL ECU) Turn the power switch off. Disconnect the connector from the hybrid vehicle control ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F11-13 (TC) - A58-33 (TC) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to DLC3) *2 Front view of wire harness connector (to Hybrid Vehicle Control ECU) NG --> REPLACE WIRE HARNESS OK: Go to next step
2. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F11-4 (CG) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to DLC3) NG --> REPLACE WIRE HARNESS OK: Go to next step
3. CHECK WIRE HARNESS (TC OF DCL3 - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F11-13 (TC) - Body ground Always 1 Mohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to DLC3) NG --> REPLACE WIRE HARNESS OR EACH ECU OK --> See step 4
4. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «REMOVAL»(ref-398090-S02975140692011051600000)

See also:
• REMOVAL