Toyota RAV4 Service Manual: Can communication system
Precaution
- Precaution
- Turn the ignition switch off before measuring the resistance of the main wire and the branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
Hint:
Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.
- Steering system handling precautions
- Care must be taken when replacing parts. Incorrect replacement could affect the performance of the steering system and result in hazards when driving.
- Srs airbag system handling precautions
- This vehicle is equipped with an srs (supplemental restraint system) such as the driver airbag and front passenger airbag. Failure to carry out service operations in the correct sequence could cause unexpected srs deployment during servicing and may lead to a serious accident. Before servicing (including installation/removal, inspection and replacement of parts), be sure to read the precautionary notice for the supplemental restraint system (see page rs-1).
- Bus line repair
- After repairing the bus line with solder, wrap the repaired part with vinyl tape (see page in-37).
Notice:
- The canl bus line and canh bus line must be installed together.
- When installing, twist them together.
- Can bus lines are likely to be influenced by noise if the bus lines are not twist together.
- The difference in length between the canl bus line and canh bus line should be less than 100 mm (3.937 In.).
- Leave approximately 80 mm (3.150 In.) Loose in the twisted wires around the connectors.
- Do not use bypass wiring between the connectors.
Notice:
The feature of the twisted wire harness will be lost if bypass wiring is used.
- Connector handling
- When inserting tester probes into a connector, insert them from the rear of the connector.
- Use a repair wire to check the connector if it is impossible to check resistance from the rear of the connector.
Parts location
System diagram
Hint:
The abs and traction actuator (skid control ecu)
detects and stores steering sensor and yaw rate
sensor dtcs and performs dtc communication by
receiving ...
Other materials:
Precaution
Caution:
Replace the faulty parts of the seat belt systems (outer
belt, inner belt, bolts, nuts, adjustable shoulder anchor,
tether anchor hardware and other related parts). When
inspecting a vehicle that was in a collision, be sure to
check all of the seat belt systems regardless of whethe ...
Data list / active test
Read data list
Hint:
Using the intelligent tester's data list allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the data list early in
troubleshooting is one way to save time.
Connect the intelligent tester (with can vim) to the
dlc3 ...
Communication malfunction no. 1
Description
This dtc is output when a communication error occurs between the transponder
key amplifier and
transponder key ecu. Some possible reasons for the communication error are: 1) 2
or more ignition keys
are positioned too close together, or 2) noise is occurring in the communicatio ...