DESCRIPTION
The passenger airbag ON/OFF indicator circuit consists of the airbag sensor assembly and passenger airbag ON/OFF indicator (radio receiver assembly).
The passenger airbag ON/OFF indicator indicates the operation condition of the instrument panel passenger airbag assembly and front seat cushion airbag assembly (passenger side).
DTC B1660/43 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Test Mode / Check Mode |
|---|---|---|---|---|
| B1660/43 | Passenger Airbag ON/OFF Indicator Circuit Malfunction |
|
|
Does not apply to test/check mode |
WIRING DIAGRAM
w/o Navigation System:
w/ Navigation System:
CAUTION / NOTICE / HINT
Note
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION
Turn the engine switch on (IG).
Check the passenger airbag ON/OFF indicator operation.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
CHECK CONNECTORS Click here |
| A |
|
CHECK CONNECTORS
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
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 airbag sensor assembly, radio receiver assembly and instrument panel junction block assembly.
| OK |
|---|
| The connectors are properly connected. |
Tech Tips
If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.
Disconnect the connectors from the airbag sensor assembly, radio receiver assembly and instrument panel junction block assembly.
Check that the terminals of the connectors are not deformed or damaged.
| OK |
|---|
| The terminals are not deformed or damaged. |
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
| OK |
|
CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION
Connect the connector to the radio receiver assembly and instrument panel junction block assembly.
Connect the cable to the negative (-) battery terminal.
Turn the engine switch on (IG).
Check the passenger airbag ON/OFF indicator operation.
| OK |
|---|
| The passenger airbag ON/OFF indicator does not come on. |
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK WIRE HARNESS (OPEN) Click here |
| OK |
|
CHECK DTC
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
Connect the connector to the airbag sensor assembly.
Connect the cable to the negative (-) battery terminal.
Clear the DTCs stored in memory.
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs.
| OK |
|---|
| DTC B1660/43 is not output. |
Tech Tips
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.
| Result | |||
|---|---|---|---|
|
| OK |
|
USE SIMULATION METHOD TO CHECK Click here |
| NG |
|
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
CHECK WIRE HARNESS (OPEN)
Turn the engine switch off.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *5 | Service Wire | - | - |
| *a | Front view of wire harness connector (to Airbag Sensor Assembly) |
*b | Front view of wire harness connector (to Radio Receiver Assembly) |
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
Disconnect the connector from the radio receiver assembly.
Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
||||||
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (OPEN) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT)
Disconnect the service wire from connector B.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
||||||
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT TO B+)
Connect the cable to the negative (-) battery terminal.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT TO GROUND)
Measure the resistance according to the value(s) in the table below.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE RADIO RECEIVER ASSEMBLY w/o Navigation System: Click here |
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (SHORT)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (OPEN)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *5 | Service Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
| *b | Front view of wire harness connector (to Airbag Sensor Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Tech Tips
The service wire has already been inserted into connector B.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect the service wire from connector B.
Using a service wire, connect terminals 15*1 or 34*2 (ARON) and 14*1 or 33*2 (AIR) of connector E.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
*1: w/o Navigation System
*2: w/ Navigation System
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *5 | Service Wire | - | - |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
*b | Front view of wire harness connector (to Radio Receiver Assembly) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect the service wire from connector E.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK CONNECTORS
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
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 airbag sensor assembly, radio receiver assembly and instrument panel junction block assembly.
| OK |
|---|
| The connectors are properly connected. |
Tech Tips
If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.
Disconnect the connectors from the airbag sensor assembly, radio receiver assembly and instrument panel junction block assembly.
Check that the terminals of the connectors are not deformed or damaged.
| OK |
|---|
| The terminals are not deformed or damaged. |
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
| OK |
|
CHECK WIRE HARNESS (OPEN)
Connect the connector to the instrument panel junction block assembly.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *5 | Service Wire | - | - |
| *a | Front view of wire harness connector (to Airbag Sensor Assembly) |
*b | Front view of wire harness connector (to Radio Receiver Assembly) |
Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
||||||
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (OPEN) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT)
Disconnect the service wire from connector B.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
||||||
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT TO B+)
Connect the cable to the negative (-) battery terminal.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) Click here |
| OK |
|
CHECK WIRE HARNESS (SHORT TO GROUND)
Measure the resistance according to the value(s) in the table below.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) Click here |
| OK |
|
CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)
Connect the cable to the negative (-) battery terminal.
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Radio Receiver Assembly) |
- | - |
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | ||||||
|---|---|---|---|---|---|---|
|
||||||
|
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE WIRE HARNESS OR BATTERY |
| OK |
|
CHECK PASSENGER AIRBAG ON/OFF INDICATOR
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Airbag Sensor Assembly) |
Connect the connector to the radio receiver assembly.
Connect the cable to the negative (-) battery terminal.
Turn the engine switch on (IG).
Check the passenger airbag ON/OFF indicator according to the conditions in the table below.
| OK | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE RADIO RECEIVER ASSEMBLY w/o Navigation System: Click here |
| OK |
|
CHECK DTC
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
Connect the connector to the airbag sensor assembly.
Connect the cable to the negative (-) battery terminal.
Clear the DTCs stored in memory.
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs.
| OK |
|---|
| DTC B1660/43 is not output. |
Tech Tips
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.
| Result | |||
|---|---|---|---|
|
| OK |
|
USE SIMULATION METHOD TO CHECK Click here |
| NG |
|
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (SHORT)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |
CHECK INSTRUMENT PANEL WIRE (OPEN)
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly |
| *4 | Instrument Panel Wire |
| *5 | Service Wire |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
| *b | Front view of wire harness connector (to Airbag Sensor Assembly) |
Disconnect the connector from the instrument panel junction block assembly.
Tech Tips
The service wire has already been inserted into connector B.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect the service wire from connector B.
Using a service wire, connect terminals 15*1 or 34*2 (ARON) and 14*1 or 33*2 (AIR) of connector E.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
*1: w/o Navigation System
*2: w/ Navigation System
| *A | w/o Navigation System | *B | w/ Navigation System |
| *1 | Instrument Panel Junction Block Assembly | *2 | Airbag Sensor Assembly |
| *3 | Radio Receiver Assembly | *4 | Instrument Panel Wire |
| *5 | Service Wire | - | - |
| *a | Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
*b | Front view of wire harness connector (to Radio Receiver Assembly) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect the service wire from connector E.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
| NG |
|
REPLACE INSTRUMENT PANEL WIRE |