P0105

COMPONENT DESCRIPTION
The sensor detects ambient barometric pressure and sends the voltage signal to the ECM. As the pressure increases, the voltage rises.

ON BOARD DIAGNOSIS LOGIC:

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.




With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 6 seconds.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

OR

With Generic Scan Tools
1. Turn ignition switch "ON" and wait at least 6 seconds.
2. Select "MODE 7" with GST.
3. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

OR

Without Scan Tools
1. Turn ignition switch "ON" and wait at least 6 seconds.
2. Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

EC-AP/SEN-01:

EC-AP/SEN-01 - Connector View:

WIRING DIAGRAM

Diagnostic Procedure (Part 1 Of 2):

Diagnostic Procedure (Part 2 Of 2):

DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION




Absolute pressure sensor
1. Remove absolute pressure sensor with its harness connector connected.
2. Turn ignition switch "ON" and check output voltage between ECM terminal 066 and engine ground.
The voltage should be 1.8 to 4.8 V.
3. Use pump to apply vacuum of -26.7 kPa (-200 mmHg, -7.87 inHg) to absolute pressure sensor as shown in figure and check the output voltage.
The voltage should be 1.0 to 1.4 V lower than the value measured in step 3.

CAUTION:
- Always calibrate the vacuum pump gauge when using it.
- Do not apply vacuum below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg).

4. If NG, replace absolute pressure sensor.