Airbag System (Diagnostic Codes & Circuit Tests): Overview Lexus GS III рестайлинг

DESCRIPTION

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

If the center airbag sensor receives signals from the airbag sensor, it determines whether or not the SRS should be activated.

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

HINT

When a malfunction code is displayed simultaneously with B1000/31, repair the malfunction indicated by that code first.

Scheme 196

Scheme 197

Scheme 198

Scheme 199

Scheme 200

Scheme 201

Scheme 202

Scheme 203

Scheme 204

1. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT TO B+) Turn the power switch OFF. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds. Disconnect the K44 center airbag sensor connector and the A1 front airbag sensor LH connector. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition A1-2 (+SL) - Body ground Power switch ON (IG) Below 1 V A1-1 (-SL) - Body ground Power switch ON (IG) Below 1 V NG --> See step 8 OK: Go to next step
2. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the K44 center airbag sensor connector and the A1 front airbag sensor LH connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - A1-1 (-SL) 1 Mohms or higher NG --> See step 9 OK: Go to next step
3. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT TO GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - Body ground 1 Mohms or higher A1-1 (-SL) - Body ground 1 Mohms or higher NG --> See step 10 OK: Go to next step
4. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+) Disconnect the A25 connector from the front airbag sensor RH. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition A25-2 (+SR) - Body ground Power switch ON (IG) Below 1 V A25-1 (+SR) - Body ground Power switch ON (IG) Below 1 V NG --> See step 11 OK: Go to next step
5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - A25-1 (-SR) 1 Mohms or higher NG --> See step 12 OK: Go to next step
6. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - Body ground 1 Mohms or higher A25-1 (-SR) - Body ground 1 Mohms or higher NG --> See step 13 OK: Go to next step
7. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the connectors to the center airbag sensor, front airbag sensor LH and RH. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1000/31 is not output. NG --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY OK --> USE SIMULATION METHOD TO CHECK
8. CHECK ENGINE ROOM MAIN WIRE (SHORT TO B+) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the engine room main wire connector from the instrument panel wire. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition A1-2 (+SL) - Body ground Power switch ON (IG) Below 1 V A1-1 (-SL) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE
9. CHECK ENGINE ROOM MAIN WIRE (SHORT) Disconnect the engine room main wire connector from the instrument panel wire. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - A1-1 (-SL) 1 Mohms or higher NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE
10. CHECK ENGINE ROOM MAIN WIRE (SHORT TO GROUND) Disconnect the engine room main wire connector from the instrument panel wire. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - Body ground 1 Mohms or higher A1-1 (-SL) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE
11. CHECK ENGINE ROOM MAIN WIRE (SHORT TO B+) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the engine room main wire connector from the instrument panel wire. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition A25-2 (+SR) - Body ground Power switch ON (IG) Below 1 V A25-1 (-SR) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE
12. CHECK ENGINE ROOM MAIN WIRE (SHORT) Disconnect the engine room main wire connector from the instrument panel wire. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - A25-1 (-SR) 1 Mohms or higher NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE
13. CHECK ENGINE ROOM MAIN WIRE (SHORT TO GROUND) Disconnect the engine room main wire connector from the instrument panel wire. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - Body ground 1 Mohms or higher A25-1 (-SR) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE

The front airbag sensor RH consists of the diagnostic circuit, the frontal deceleration sensor, etc.

If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 205

Scheme 206

Scheme 207

Scheme 208

Scheme 209

1. CHECK DTC Turn the power switch OFF. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1610/13 is not output. HINT: Codes other than DTC B1610/13 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the front airbag sensor RH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN) Disconnect the connectors from the center airbag sensor and the front airbag sensor RH. Using a service wire, connect terminals K44-29 (+SR) and K44-27 (-SR) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - A25-1 (-SR) Below 1 ohms NG --> See step 5 OK: Go to next step
4. CHECK FRONT AIRBAG SENSOR RH Disconnect the service wire from connector "B". Connect the connectors to the center airbag sensor. Interchange the front airbag sensor RH with LH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1610/13 is output. A DTC B1615/14 is output. B DTC B1610/13 and B1615/14 are not output. C HINT: Codes other than DTC B1610/13 and B1615/14 may be output at this time, but they are not related to this check. B --> REPLACE FRONT AIRBAG SENSOR RH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK
5. CHECK ENGINE ROOM MAIN WIRE (OPEN) Disconnect the service wire from connector "B". Disconnect the engine room main wire connector from the instrument panel wire. Using a service wire, connect terminals KA4-2 (+SR) and KA4-1 (-SR) of connector "D". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A25-2 (+SR) - A25-1 (-SR) Below 1 ohms NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE

The front airbag sensor LH consists of the diagnostic circuit, the frontal deceleration sensor, etc.

If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 210

Scheme 211

Scheme 212

Scheme 213

Scheme 214

1. CHECK FOR DTC Turn the power switch OFF. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1615/14 is not output. HINT: Codes other than DTC B1615/14 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connector is properly connected to the center airbag sensor and the front airbag sensor LH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (OPEN) Disconnect the connectors from the center airbag sensor and the front airbag sensor LH. Using a service wire, connect terminals K44-30 (+SL) and K44-28 (-SL) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - A1-1(-SL) Below 1 ohms NG --> See step 5 OK: Go to next step
4. CHECK FRONT AIRBAG SENSOR LH Disconnect the service wire from connector "B". Connect the connectors to the center airbag sensor. Interchange the front airbag sensor RH with LH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch OFF, and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1615/14 is output. A DTC B1610/13 is output. B DTC B1610/13 and B1615/14 are not output. C HINT: Codes other than DTC B1610/13 and B1615/14 may be output at this time, but they are not related to this check. B --> REPLACE FRONT AIRBAG SENSOR LH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK
5. CHECK ENGINE ROOM MAIN WIRE Disconnect the service wire from connector "B". Disconnect the engine room main wire connector from the instrument panel wire. Using a service wire, connect terminals KA1-2 (+SL) and KA1-1 (-SL) of connector "D". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition A1-2 (+SL) - A1-1 (-SL) Below 1 ohms NG --> REPAIR OR REPLACE ENGINE ROOM MAIN WIRE OK --> REPAIR OR REPLACE INSTRUMENT PANEL WIRE

The side airbag sensor RH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 215

Scheme 216

Scheme 217

Scheme 218

Scheme 219

Scheme 220

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1620/21 is not output. HINT: Codes other than DTC B1620/21 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the side airbag sensor RH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the side airbag sensor RH. Using a service wire, connect terminals U13-19 (VUPR) and U13-21 (ESR) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U5-2 (VUPR) - U5-1 (ESR) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
4. CHECK FLOOR WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U5-2 (VUPR) - U5-1 (ESR) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
5. CHECK FLOOR WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition U5-2 (VUPR) - Body ground Power switch ON (IG) Below 1 V U5-1 (ESR) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
6. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U5-2 (VUPR) - Body ground 1 Mohms or higher U5-1 (ESR) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
7. CHECK SIDE AIRBAG SENSOR RH Connect the connectors to the center airbag sensor. Interchange the side airbag sensor LH with RH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1620/21 is output. A DTC B1625/22 is output. B DTC B1620/21 and B1625/22 are not output. C HINT: Codes other than DTC B1620/21 and B1625/22 may be output at this time, but they are not related to this check. B --> REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK

The side airbag sensor LH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1625/22 is not output. HINT: Codes other than DTC B1625/22 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the side airbag sensor LH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR NO. 2 WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the side airbag sensor LH. Using a service wire, connect terminals V16-22 (VUPL) and V16-20 (ESL) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V8-2 (VUPL) - V8-1 (ESL) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
4. CHECK FLOOR NO. 2 WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V8-2 (VUPL) - V8-1 (ESL) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
5. CHECK FLOOR NO. 2 WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition V8-2 (VUPL) - Body ground Power switch ON (IG) Below 1 V V8-1 (ESL) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
6. CHECK FLOOR NO. 2 WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V8-2 (VUPL) - Body ground 1 Mohms or higher V8-1 (ESL) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
7. CHECK SIDE AIRBAG SENSOR LH Connect the connectors to the center airbag sensor. Interchange the side airbag sensor LH with RH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1625/22 is output. A DTC B1620/21 is output. B DTC B1620/21 and B1625/22 are not output. C HINT: Codes other than DTC B1620/21 and B1625/22 may be output at this time, but they are not related to this check. B --> REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK

The rear airbag sensor RH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 226

Scheme 227

Scheme 228

Scheme 229

Scheme 230

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1630/23 is not output. HINT: Codes other than DTC B1630/23 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the rear airbag sensor RH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the rear airbag sensor RH. Using a service wire, connect terminals U13-20 (VUCR) and U13-22 (ESCR) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U10-2 (VUCR) - U10-1 (ESCR) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
4. CHECK FLOOR WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U10-2 (VUCR) - U10-1 (ESCR) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
5. CHECK FLOOR WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition U10-2 (VUCR) - Body ground Power switch ON (IG) Below 1 V U10-1 (ESCR) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
6. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition U10-2 (VUCR) - Body ground 1 Mohms or higher U10-1 (ESCR) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
7. CHECK REAR AIRBAG SENSOR RH Connect the connectors to the center airbag sensor. Interchange the rear airbag sensor LH with RH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1630/23 is output. A DTC B1635/24 is output. B DTC B1630/23 and B1635/24 are not output. C HINT: Codes other than DTC B1630/23 and B1635/24 may be output at this time, but they are not related to this check. B --> REPLACE REAR AIRBAG SENSOR RH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK

The rear airbag sensor LH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.

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

Scheme 231

Scheme 232

Scheme 233

Scheme 234

Scheme 235

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1635/24 is not output. HINT: Codes other than DTC B1635/24 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the rear airbag sensor LH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR NO. 2 WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the rear airbag sensor LH. Using a service wire, connect terminals V16-21 (VUCL) and V16-19 (ESCL) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V12-2 (VUCL) - V12-1 (ESCL) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
4. CHECK FLOOR NO. 2 WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V12-2 (VUCL) - V12-1 (ESCL) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
5. CHECK FLOOR NO. 2 WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition V12-2 (VUCL) - Body ground Power switch ON (IG) Below 1 V V12-1 (ESCL) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
6. CHECK FLOOR NO. 2 WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V12-2 (VUCL) - Body ground 1 Mohms or higher V12-1 (ESCL) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
7. CHECK REAR AIRBAG SENSOR LH Connect the connectors to the center airbag sensor. Interchange the rear airbag sensor LH with RH and connect the connectors to them. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . RESULT Result Proceed to DTC B1635/24 is output. A DTC B1630/23 is output. B DTC B1630/23 and B1635/24 are not output. C B --> REPLACE REAR AIRBAG SENSOR LH A --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY C --> USE SIMULATION METHOD TO CHECK

w/ Occupant Classification System

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

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

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

w/o Occupant Classification System

The occupant detection sensor circuit consists of the center airbag sensor and the occupant detection sensor.

If the center airbag sensor receives signals from the occupant detection sensor, it determines whether the front passenger airbag, the front seat side airbag RH and front seat outer belt should be operated.

DTC B1650/32 is recorded when a malfunction is detected in the occupant detection sensor circuit.

The seat position airbag sensor circuit consists of the center airbag sensor and the seat position airbag sensor.

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

Scheme 236

Scheme 237

Scheme 238

Scheme 239

Scheme 240

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1653/35 is not output. HINT: Codes other than DTC B1653/35 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the seat position airbag sensor. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR NO. 2 WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the seat position airbag sensor. Using a service wire, connect terminals V16-16 (LSP+) and V16-24 (LSP-) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-2 (LSP+) - V4-4 (LSP-) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
4. CHECK FLOOR NO. 2 WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-2 (LSP+) - V4-4 (LSP-) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
5. CHECK FLOOR NO. 2 WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition V4-2 (LSP+) - Body ground Power switch ON (IG) Below 1 V V4-4 (LSP-) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
6. CHECK FLOOR NO. 2 WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-2 (LSP+) - Body ground 1 Mohms or higher V4-4 (LSP-) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
7. CHECK SEAT POSITION AIRBAG SENSOR Connect the connectors to the center airbag sensor and the seat position airbag sensor. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1653/35 is not output. HINT: Codes other than DTC B1653/35 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
8. REPLACE SEAT POSITION AIRBAG SENSOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Temporarily replace the front seat inner belt LH with a new or normal functioning one. Refer to «REMOVAL»(ref-386976-S14906306542011022400000) . NEXT: Go to next step
9. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1653/35 is not output. HINT: Codes other than DTC B1653/35 may be output at this time, but they are not related to this check. NG --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY OK --> END

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

DTC B1655/37 is recorded when a malfunction is detected in the seat belt buckle switch RH circuit.

Scheme 241

Scheme 242

Scheme 243

Scheme 244

1. CHECK DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1655/37 is not output. HINT: Codes other than DTC B1655/37 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTORS Turn the power switch off. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor assembly and the front seat inner belt assembly RH. OK The connectors are connected. NG --> CONNECT CONNECTORS, THEN GO TO STEP 1 OK: Go to next step
3. CHECK FLOOR WIRE (OPEN) Disconnect the connectors from the center airbag sensor assembly and the front seat inner belt assembly RH. Using a service wire, connect U13-10 (RBE+) and U13-18 (RBE-) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition U39-1 (RBE+) - U39-3 (RBE-) Always Below 1 ohms NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
4. CHECK FLOOR WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition U39-1 (RBE+) - U39-3 (RBE-) Always 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
5. CHECK FLOOR WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition U39-1 (RBE+) - Body ground Power switch on (IG) Below 1 V U39-3 (RBE-) - Body ground Power switch on (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
6. CHECK FLOOR WIRE (SHORT TO GROUND) Turn the power switch off. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition U39-1 (RBE+) - Body ground Always 1 Mohms or higher U39-3 (RBE-) - Body ground Always 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR WIRE OK: Go to next step
7. CHECK FRONT SEAT INNER BELT ASSEMBLY RH Connect the connector to the center airbag sensor assembly and the front seat inner belt assembly RH. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1655/37 is not output. HINT: Codes other than DTC B1655/37 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
8. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Turn the power switch off. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Replace the front seat inner belt assembly RH. Refer to «REMOVAL»(ref-387151-S20580642782011022400000) . HINT: Perform the inspection using parts from a normal vehicle if possible. NEXT: Go to next step
9. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1655/37 is not output. HINT: Codes other than DTC B1655/37 may be output at this time, but they are not related to this check. NG --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY OK --> END

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

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

Scheme 245

Scheme 246

Scheme 247

Scheme 248

Scheme 249

1. CHECK DTC Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1656/38 is not output. HINT: Codes other than DTC B1656/38 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
2. CHECK CONNECTION OF CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the front seat inner belt LH. OK The connectors are connected. NG --> CONNECT CONNECTORS OK: Go to next step
3. CHECK FLOOR NO. 2 WIRE (OPEN) Disconnect the connectors from the center airbag sensor and the front seat inner belt LH. Using a service wire, connect terminals V16-15 (LBE+) and V16-23 (LBE-) of connector "B". NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-1 (LBE+) - V4-3 (LBE-) Below 1 ohms NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
4. CHECK FLOOR NO. 2 WIRE (SHORT) Disconnect the service wire from connector "B". Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-1 (LBE+) - V4-3 (LBE-) 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
5. CHECK FLOOR NO. 2 WIRE (SHORT TO B+) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition V4-1 (LBE+) - Body ground Power switch ON (IG) Below 1 V V4-3 (LBE-) - Body ground Power switch ON (IG) Below 1 V NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
6. CHECK FLOOR NO. 2 WIRE (SHORT TO GROUND) Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition V4-1 (LBE+) - Body ground 1 Mohms or higher V4-3 (LBE-) - Body ground 1 Mohms or higher NG --> REPAIR OR REPLACE FLOOR NO. 2 WIRE OK: Go to next step
7. CHECK FRONT SEAT INNER BELT ASSEMBLY LH Connect the connector to the center airbag sensor and the front seat inner belt LH. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1656/38 is not output. HINT: Codes other than DTC B1656/38 may be output at this time, but they are not related to this check. OK --> USE SIMULATION METHOD TO CHECK NG: Go to next step
8. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Temporarily replace the front seat inner belt LH with a new or normal functioning one. Refer to «REMOVAL»(ref-387151-S20580642782011022400000) . NEXT: Go to next step
9. CHECK CENTER AIRBAG SENSOR ASSEMBLY Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs stored in memory. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . Turn the power switch OFF. Turn the power switch ON (IG), and wait for at least 60 seconds. Check the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . OK DTC B1656/38 is not output. HINT: Codes other than DTC B1656/38 may be output at this time, but they are not related to this check. NG --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY OK --> END

The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor and the 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 recorded when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

Scheme 250

Scheme 251

Scheme 252

Scheme 253

Scheme 254

Scheme 255

Scheme 256

Scheme 257

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-387113-S03380841082011022400000) . RESULT ON/OFF Indicator Illumination Proceed to Always ON A OFF B B --> See step 7 A: Go to next step
2. CHECK CONNECTION OF CONNECTORS Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the multi-display. OK The connectors are properly connected. NG --> CONNECT CONNECTORS PROPERLY OK: Go to next step
3. CHECK CONNECTORS Disconnect the connectors from the center airbag sensor and the multi-display. Check that the connectors (on the center airbag sensor side and multi-display side) are not damaged. OK The connectors are not deformed or damaged. NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR Connect the connector to the multi-display. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. 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 6 OK: Go to next step
5. CHECK CENTER AIRBAG SENSOR Connect the connector to the center airbag sensor. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . 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-387113-S10657878242011022400000) . OK DTC B1660/43 is not output. HINT: Codes other than DTC B1660/43 may be output at this time, but they are not related to this check. NG --> See step 13 OK --> See step 14
6. CHECK INSTRUMENT PANEL WIRE Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the connector from the multi-display. Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B. NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K46-9 (ARON) - K46-20 (AIR) Below 1 ohms Disconnect the service wire from connector B. Measure the resistance of the wire harness side connector. Standard resistance Tester Connection Specified Condition K46-9 (ARON) - K46-20 (AIR) 1 Mohms or higher K46-9 (ARON) - Body ground 1 Mohms or higher K46-20 (AIR) - Body ground 1 Mohms or higher Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K46-9 (ARON) - Body ground Power switch ON (IG) Below 1 V K46-20 (AIR) - Body ground Power switch ON (IG) Below 1 V OK --> See step 15 NG --> REPLACE INSTRUMENT PANEL WIRE
7. CHECK CONNECTION OF CONNECTORS Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and the multi-display. OK The connectors are properly connected. NG --> CONNECT CONNECTORS PROPERLY OK: Go to next step
8. CHECK CONNECTORS Disconnect the connectors from the center airbag sensor and the multi-display. Check that the connectors (on the center airbag sensor side and multi-display side) are not damaged. OK The connectors are not deformed or damaged. NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
9. CHECK INSTRUMENT PANEL WIRE Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the connector from the multi-display. Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B. NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K46-9 (ARON) - K46-20 (AIR) Below 1 ohms Disconnect the service wire from connector B. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K46-9 (ARON) - K46-20 (AIR) 1 Mohms or higher K46-9 (ARON) - Body ground 1 Mohms or higher K46-20 (AIR) - Body ground 1 Mohms or higher Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Measure the voltage of the wire harness side connectors. Standard voltage Tester Connection Condition Specified Condition K46-9 (ARON) - Body ground Power switch ON (IG) Below 1 V K46-20 (AIR) - Body ground Power switch ON (IG) Below 1 V NG --> REPLACE INSTRUMENT PANEL WIRE OK: Go to next step
10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE) Connect the connectors to the center airbag sensor. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. 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 K46-3 (IG) - Body ground Power switch ON (IG) 11 to 14 V NG --> REPLACE HARNESS AND CONNECTOR (PASSENGER AIRBAG ON/OFF INDICATOR - BATTERY) OR BATTERY OK: Go to next step
11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Connect the connector to the multi-display. Disconnect the connectors from the center airbag sensor. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Check the indicator according to the value(s) in the table below. Result Tester Connection Switch Condition Passenger airbag ON/OFF indicator K44-23 (PAON) - Body ground Power switch ON (IG) "ON" comes on K44-17 (P-AB) - Body ground Power switch ON (IG) "OFF" comes on NG --> See step 17 OK: Go to next step
12. CHECK CENTER AIRBAG SENSOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Connect the connectors to the center airbag sensor. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds. Turn the power switch ON (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387113-S10657878242011022400000) . 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-387113-S10657878242011022400000) . OK DTC B1660/43 is not output. HINT: Codes other than DTC B1660/43 may be output at this time, but they are not related to this check. NG --> See step 18 OK --> See step 16
13. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «COMPONENTS»(ref-386976-S04958092942011022400000)
14. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM»(ref-387113-S03380841082011022400000)
15. REPLACE MULTI-DISPLAY ASSEMBLY. Refer to «COMPONENTS»(ref-387134-S05559888812011022400000)
16. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM»(ref-387113-S03380841082011022400000)
17. REPLACE MULTI-DISPLAY ASSEMBLY. Refer to «COMPONENTS»(ref-387134-S05559888812011022400000)
18. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to «COMPONENTS»(ref-386976-S04958092942011022400000)

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

Scheme 258

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

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

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

Scheme 259

The driver side squib 2nd step circuit consists of the center airbag sensor, the spiral cable and the steering pad.

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

These DTCs are recorded when a malfunction is detected in the driver side squib 2nd step circuit.

Scheme 260

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

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

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

Scheme 261

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

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

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

Scheme 262

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

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

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

Scheme 263

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

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

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

Scheme 264

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

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

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

Scheme 265

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

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

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

Scheme 266

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

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

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

Scheme 267

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

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

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

Scheme 268

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

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

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

Scheme 269

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

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

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

Scheme 270

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

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

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

Scheme 271

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

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

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

Scheme 272

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

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

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

Scheme 273

The SRS warning light is located on the combination meter.

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 blinking the SRS warning light.

The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the center airbag sensor in case the source voltage drops. When the 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 recorded in the center airbag sensor. 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 to the combination meter through the multiplex communication system.

Scheme 274

Scheme 275

Scheme 276

1. CHECK BATTERY Measure the voltage of the battery. Standard voltage 11 to 14 V NG --> CHECK AND REPLACE BATTERY OR CHARGING SYSTEM OK: Go to next step
2. CHECK CONNECTOR Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor and combination meter. OK The connectors are connected. NG --> CONNECT CONNECTOR OK: Go to next step
3. CHECK WIRE HARNESS (CENTER AIRBAG SENSOR - BATTERY AND BODY GROUND) Disconnect the connectors from the center airbag sensor. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Operate all components of the electrical system (defogger, wipers, headlight, heater blower, etc.). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition K44-21 (IG2) - Body ground Power switch ON (IG) 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition K44-25 (E1) - Body ground Below 1 ohms K44-26 (E2) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WIRE HARNESS (COMBINATION METER - BATTERY AND BODY GROUND) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the connector from the combination meter. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Measure the voltage and resistance according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition K31-1 (IG+) - Body ground Power switch ON (IG) 10 to 14 V K31-21 (B) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition K31-20 (ES) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK SRS WARNING LIGHT Turn the power switch OFF. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Connect the connector to the combination meter. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the power switch ON (IG). Check the SRS warning light condition. OK After the primary check period, the SRS warning light goes off for approximately 10 seconds, and then turns on and remains on. HINT: The primary check period continues for approximately 6 seconds after the power switch is turned ON (IG). NG --> See next step OK --> REPLACE CENTER AIRBAG SENSOR ASSEMBLY
6. GO TO METER / GAUGE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387092-S02397406432011022400000)

Refer to the SRS warning light remains ON. Refer to SRS Warning Light Remains ON .

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

The DTCs are displayed by blinking the SRS warning light.

HINT

1. Make sure that DTC B1281 has not been output. If DTC B1281 has been output, refer to the multiplex communication system.
2. When each warning light keeps blinking, a short to ground in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
3. The DTC output mode signal is transmitted through the BEAN to the center airbag sensor and each ECU, except for the skid control ECU with actuator. When all systems except the VSC system do not enter DTC output mode, the ECM may have a malfunction.

Scheme 277