Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system.
- If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in the emission control system. Your vehicle may not pass the I/ M test and may need to be repaired. Contact your Toyota dealer to service the vehicle.
- Your vehicle may not pass the I/M test:
• When the battery is disconnected or discharged Readiness codes that are set during
ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may not be completely set.
• When the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary malfunction and your vehicle may not pass the I/M test.
- When the malfunction indicator lamp goes off after several driving trips
The error code in the OBD system will not be cleared unless the vehicle is driven 40 or more times.
- If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.
Vehicle exteriorRear Airbag Sensor RH Circuit Malfunction (B1630/23)
DESCRIPTION
The side collision sensor RH circuit (to determine deployment of the front seat
side airbag assembly RH and curtain shield airbag assembly RH) is composed of the
center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH.
...
Brake Switch "A" Circuit (P0571)
DESCRIPTION
When the brake pedal is depressed, the stop light switch assembly sends a signal
to the ECM. When the ECM receives this signal, it cancels the cruise control. The
fail-safe function operates to enable normal driving even if there is a malfunct ...
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to IGSW
of the ECM. The output signal from the MREL terminal of the ECM causes a current
to flow to the coil, closing the contact of the engine room junction block assemb ...