The occupant classification ecu controls the functions of the occupant classification system on the vehicle. Data of the occupant classification system can be read in the data link connector 3 (dlc3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for a malfunction and perform repairs.
The ecu uses iso 15765-4 for communication. The terminal arrangement of the dlc3 complies with iso 15031-3 and matches the iso 15765-4 format.
Notice:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any switches or doors.
If the result is not as specified, the dlc3 may have a malfunction. Repair or replace the harness and connector.
Hint:
Connect the cable of the intelligent tester (with can vim) to the dlc3, turn the ignition switch on and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
Hint:
The most difficult case in troubleshooting is when no symptoms occur. In such cases, a thorough customer problem analysis must be carried out. A simulation of the same or similar conditions and environment in which the problem occurred in the customer's vehicle should be carried out. No matter how much skill or experience a technician has, troubleshooting without confirming the problem symptoms will lead to important repairs being overlooked and mistakes or delays.
When vibration seems to be the major cause.
Hint:
Perform the simulation method only during the primary check period (for approximately 6 seconds after the ignition switch is turned on).
Hint:
Shaking the relays too strongly may result in open relays.
The connector joint and fulcrum of the vibration are the major areas to be checked thoroughly.
Turn the ignition switch from the lock to the on position, hold the position for 10 seconds, and then turn it back to the lock position again 50 times in a row.
Hint:
Dtc b1795 is output if the occupant classification ecu receives the ignition switch lock-on-lock signal 50 times in a row when a malfunction occurs in the power circuit for the occupant classification system.
Hint:
Hint:
Refer to the table in the previous step regarding the passenger airbag on/off indicator when approximately 6 seconds have elapsed after the ignition switch is turned to the on position.
Child restraint systems with a top tether strap
Secure the child restraint system
using the seat belt or
latch anchors.
Latch the hook onto the anchor
bracket and tighten the top
tether strap.
Make sure the top tether strap is
securely latched.
Laws and regulations pertaining to anchorages
The latch system conforms to fmv ...
System too
Description
The fuel trim is related to the feedback compensation value, not to the basic
injection time. The fuel trim
consists of both the short-term and the long-term fuel trims.
The short-term fuel trim is fuel compensation that is used to constantly
maintain the air-fuel ratio at
...
Exhaust pipe
Components
Removal
Disconnect cable from negative battery terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove heated oxygen sensor (for bank 1
sensor 2) (s ...