Diagnosis Procedure
1.Check connector
Is the inspection result normal? Yes >> go to 2.
No >> repair the terminal and connector.
2.Check harness for open circuit
Check the resistance between the data link connector terminals.

Is the measurement value within the specification? YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the data link connector branch line circuit.
NO >> Repair the data link connector branch line.
A-bag branch line circuit
Eps branch line circuitFront wheel hub and knuckle
Inspection
COMPONENT PART
Check that the mounting conditions (looseness, backlash) of each component
and component conditions
(wear, damage) are normal.
WHEEL HUB ASSEMBLY (BEARING-INTEGRATED TYPE)
Check the following items, and replace the part if necessary.
Move the wheel hub and bearin ...
B0021 Side curtain air bag module LH
Description
DTC B0021 LH SIDE CURTAIN AIR BAG MODULE
The LH side curtain air bag module is wired to the air bag diagnosis sensor
unit. The air bag diagnosis sensor
unit will monitor for opens and shorts in detected lines to the LH side curtain
air bag module.
PART LOCATION
Refer to SRC-5, ...
Symptom diagnosis
Push-button ignition switch does not operate
Description
Check that vehicle is under the condition shown in “Conditions of vehicle”
before starting diagnosis, and check
each symptom.
Note:
The engine start function, door lock function, power distribution system,
and nats-ivis/nvis ...