Toyota RAV4 Service Manual: Driver side satellite sensor bus initialization incomplete
Description
The side airbag sensor lh consists of part including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral deceleration
sensor, it determines
whether or not the srs should be activated.
Dtc b1643/81 is set when a malfunction is detected in the side airbag sensor lh
circuit.
Wiring diagram
Inspection procedure
- Check for dtc
- Turn the ignition switch on, and wait for at least 60
seconds.
- Clear the dtcs (see page rs-49).
- Turn the ignition switch off.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check the dtcs (see page rs-49).
Ok:
dtc b1622/81 is not output.
Dtc b1632/81 is not output.
Hint:
Dtcs other than dtc b1622/81 and b1632/81 may be
output at this time, but they are not related to this check.
- Check connection of connector
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) terminal
battery, and wait for at least 90 seconds.
- Check that the connectors are properly connected to the
center airbag sensor, rear airbag sensor lh and the side
airbag sensor lh.
Ok:
the connectors are properly connected.
- Check floor wire (open)
- Disconnect the connectors from the center airbag sensor
and the side airbag sensor lh.
- Using a service wire, connect k8-4 (bbl+) and k8-3
(bbl-) of connector c.
Notice:
Do not forcibly insert the service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check floor wire (short)
- Disconnect the service wire from connector c.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check floor wire (to b+)
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check floor wire (to ground)
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check floor wire (open)
- Disconnect the connectors from the side airbag sensor
lh and the rear airbag sensor lh.
- Using a service wire, connect k11-1 (bcl-) and k11-2
(bcl+) of connector c.
Notice:
Do not forcibly insert the service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check floor wire (short)
- Disconnect the service wire from connector c.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check floor wire (to b+)
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check floor wire (to ground)
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check side airbag sensor lh
- Connect the connectors to the center airbag sensor .
- Interchange the side airbag sensor lh with the side
airbag sensor rh and connect the connectors to them.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Clear the dtcs (see page rs-49).
- Turn the ignition switch off.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check the dtcs (see page rs-49).
Result
Hint:
Dtcs other than dtc b1643/81 and b1648/82 may be
output at this time, but they are not related to this check.
- Check rear airbag sensor lh
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) terminal
battery, and wait for at least 90 seconds.
- Interchange the rear airbag sensor lh with the rear
airbag sensor rh and connect the connectors to them.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Clear the dtcs (see page rs-49).
- Turn the ignition switch off.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check the dtcs (see page rs-49).
Result
Hint:
Dtcs other than dtc b1643/81 and b1648/82 may be
output at this time, but they are not related to this check.
Use simulation method to check
Description
The rear airbag sensor rh consists of parts including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral ...
Description
When the center airbag sensor receives signals from the lateral deceleration
sensor, it determines
whether or not the srs should be activated.
Dtc b1648/82 is recorded when a ma ...
Other materials:
Evap system
Related dtcs
If any evap system dtcs are set, the malfunctioning area can be determined
using the table below.
Notice:
If the reference pressure difference between the first and second checks
is greater than the
specification, all the dtcs relating to the reference pressure (p043e, p ...
Lumbar support adjuster assembly
Inspection
Inspect lumbar support adjuster assembl
Check operation of the lumbar support adjuster.
Check if the lumbar support adjuster moves
smoothly when the battery is connected to the
lumbar support adjuster motor connector
terminals.
Ok
If the result is not as spec ...
Open in one side of can branch line
Description
If 2 or more ecus and/or sensors do not appear on the intelligent tester's
"bus check" screen via the
can vim, one side of the can branch wire may be open. (One side of the canh
[branch wire] /canl
[branch wire] of the ecu and/or sensor is open.)
Wiring diagram
...