CHECK INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY (FRONT PASSENGER SIDE SQUIB)
CHECK FRONT PASSENGER SIDE SQUIB CIRCUIT
DTC B1805/52 Short in Front Passenger Side Squib Circuit |
DTC B1806/52 Open in Front Passenger Side Squib Circuit |
DTC B1807/52 Short to GND in Front Passenger Side Squib Circuit |
DTC B1808/52 Short to B+ in Front Passenger Side Squib Circuit |
DESCRIPTION
The front passenger side squib circuit consists of the center airbag sensor and instrument panel passenger airbag.The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the front passenger side squib circuit.
| DTC Code | DTC Detection Condition | Trouble Area |
| B1805/52 | One of the following conditions is met:
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| B1806/52 | One of the following conditions is met:
| |
| B1807/52 | One of the following conditions is met:
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| B1808/52 | One of the following conditions is met:
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (HILUX_TGN26 RM000004QR1006X.html).
- When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected (HILUX_TGN26 RM000004QR300CX.html).
- HINT:
- To perform the simulation method, enter check mode (signal check) with the intelligent tester (HILUX_TGN26 RM000000XFF0AKX.html), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (HILUX_TGN26 RM000000XFD0IBX.html).
| 1.CHECK INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY (FRONT PASSENGER SIDE SQUIB) |
Turn the ignition switch off.
 |
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Disconnect the connectors from the instrument panel passenger airbag.
Connect the white wire side of SST (resistance: 2.1 Ω) to connector E (orange connector).
- CAUTION:
- Never connect the tester to the instrument panel passenger airbag (front passenger side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
- NOTICE:
- Do not forcibly insert SST into the terminals of the connector when connecting SST.
- Insert SST straight into the terminals of the connector.
- SST
- 09843-18061
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs (HILUX_TGN26 RM000000XFE0INX.html).
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Check for DTCs (HILUX_TGN26 RM000000XFE0INX.html).
- OK:
- DTC B1805/52, B1806/52, B1807/52 or B1808/52 is not output.
- HINT:
- Codes other than DTC B1805/52, B1806/52, B1807/52 and B1808/52 may be output at this time, but they are not related to this check.
Text in Illustration *1 Front Passenger Side Squib *2 Center Airbag Sensor *3 Connector E *4 SST *a Front view of wire harness connector
(to Front Passenger Side Squib)*b Color: Orange
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| OK | ||
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| 2.CHECK CONNECTOR |
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Disconnect SST from connector E.
Disconnect the connectors from the center airbag sensor.
Check that the connectors (on the center airbag sensor side and instrument panel passenger airbag side) are not damaged.
- OK:
- The lock button is not disengaged, and the claw of the lock is not deformed or damaged.
Text in Illustration *1 Front Passenger Side Squib *2 Center Airbag Sensor
 |
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| OK | |
| 3.CHECK FRONT PASSENGER SIDE SQUIB CIRCUIT |
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
 |
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition F1-1 (P+) - Body ground Ignition switch ON Below 1 V F1-2 (P-) - Body ground Ignition switch ON Below 1 V
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, 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 F1-1 (P+) - F1-2 (P-) Always Below 1 Ω
Release the activation prevention mechanism built into connector B (HILUX_TGN26 RM000000XFD0IBX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition F1-1 (P+) - F1-2 (P-) Always 1 MΩ or higher F1-1 (P+) - Body ground Always 1 MΩ or higher F1-2 (P-) - Body ground Always 1 MΩ or higher
Restore the released activation prevention mechanism of connector B to its original condition.
| *1 | Front Passenger Side Squib |
| *2 | Center Airbag Sensor |
| *3 | Connector E |
| *a | Front view of wire harness connector (to Front Passenger Side Squib) |
| *b | Color: Orange |
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| OK | |
| 4.CHECK DTC |
Connect the connectors to the instrument panel passenger airbag and center airbag sensor.
 |
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs (HILUX_TGN26 RM000000XFE0INX.html).
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Check for DTCs (HILUX_TGN26 RM000000XFE0INX.html).
- OK:
- DTC B1805/52, B1806/52, B1807/52 or B1808/52 is not output.
- HINT:
- Codes other than DTC B1805/52, B1806/52, B1807/52 and B1808/52 may be output at this time, but they are not related to this check.
Text in Illustration *1 Front Passenger Side Squib *2 Center Airbag Sensor
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| OK | ||
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| 5.CHECK INSTRUMENT PANEL WIRE |
Disconnect the instrument panel wire connector from the instrument panel wire assembly.
 |
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition GF1-1 (P+) - Body ground Ignition switch ON Below 1 V GF1-2 (P-) - Body ground Ignition switch ON Below 1 V
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, 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 GF1-1 (P+) - GF1-2 (P-) Always Below 1 Ω
Release the activation prevention mechanism built into connector B (HILUX_TGN26 RM000000XFD0IBX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition GF1-1 (P+) - GF1-2 (P-) Always 1 MΩ or higher GF1-1 (P+) - Body ground Always 1 MΩ or higher GF1-2 (P-) - Body ground Always 1 MΩ or higher
Restore the released activation prevention mechanism of connector B to its original condition.
| *1 | Front Passenger Side Squib |
| *2 | Instrument Panel Wire Assembly |
| *3 | Instrument Panel Wire |
| *4 | Center Airbag Sensor |
| *5 | Connector C |
| *a | Front view of wire harness connector (to Instrument Panel Wire Assembly) |
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| OK | ||
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