Code No. P0105: Barometric Pressure Sensor System

FUNCTION

The barometric pressure sensor converts the barometric pressure into a voltage signal and inputs the signal to the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
In response to the signal, the engine-ECU <M/T> or engine-A/T-ECU <A/T> corrects the fuel injection amount, etc.

TROUBLE JUDGMENT

Check Conditions

2 seconds later after the ignition switch has been in “ON” position or the engine has started up.
The battery voltage of 8 V or more.

Judgment Criteria

The sensor output voltage of 4.5 V or more (atmospheric pressure above 114 kPa or equivalent) for 2 seconds,

or

The sensor output voltage of 0.2 V or less (atmospheric pressure below 53 kPa or equivalent) for 2 seconds.

PROBABLE CAUSE

Failed barometric pressure sensor

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q. Is the diagnosis code set?

	Replace engine-ECU <M/T> or engine-A/T-ECU <A/T>.

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).