Toyota Tacoma manuals

Toyota Tacoma Owners Manual: Emission inspection and maintenance (I/M) programs

Toyota Tacoma Owners Manual / Maintenance and care / Maintenance / Emission inspection and maintenance (I/M) programs

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.

General maintenance
Listed below are the general maintenance items that should be performed at the intervals specified in the “Scheduled Maintenance Guide” or “Owner’s Manual Supplement”. It is recommended ...

When trouble arises
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Other materials:

Rear Differential Lock Position SW Stuck ON (P17BC)
DESCRIPTION This DTC is output when an ON malfunction of the differential lock indicator switch is detected. DTC No. Detection Item DTC Detection Condition Trouble Area P17BC Rear Differential Lock Position SW Stuck ON ...

Air Mix Damper Control Servo Motor Circuit (Driver Side) (B1446/46)
DESCRIPTION This No. 3 air conditioning radiator damper servo sub-assembly (for driver side air mix) is controlled by the air conditioning amplifier assembly and moves the air mix damper (for driver side) to the desired position. DTC No. DTC Detection Condition ...

Precaution
PRECAUTION 1. IGNITION SWITCH EXPRESSIONS (a) The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (Position) Engine ...

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