P0105
COMPONENT DESCRIPTION
The absolute pressure sensor is connected to the MAP/BARO switch solenoid valve by a hose. The sensor detects ambient barometric pressure and intake manifold 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
Perform "Procedure for malfunction A" first. If the 1st trip DTC cannot be confirmed, perform "Procedure for malfunction B". If the 1st trip DTC is not confirmed on "Procedure for malfunction B", perform "Procedure for malfunction C".
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.
CAUTION: Always drive vehicle at a safe speed.
Procedure for malfunction A
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".
OR
With Generic Scan Tool
Follow the procedure "With CONSULT-II" above.
Procedure for malfunction B
With Consult
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF" and wait at least 5 seconds.
3. Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT-II.
4. Start engine and let it idle.
5. Wait at least 15 seconds.
6. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".
OR
With Generic Scan Tool
Follow the procedure "With CONSULT-II" above.
Procedure for malfunction C
CAUTION: Always drive vehicle at a safe speed.
With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT-II.
The voltage of "ABSOL PRES/SE" should be more than 1.74 [V].
If the check result is NG, go to "DIAGNOSTIC PROCEDURE". If the check result is OK, go to following step.
3. Start engine (TCS switch "OFF") and warm it up to normal operating temperature.
4. Turn ignition switch "OFF" and wait at least 5 seconds.
5. Start engine and let it idle for at least 13 seconds.
6. Select "DATA MONITOR" mode with CONSULT-II.
7. Drive the vehicle at least 3 consecutive seconds under the following conditions,
B/FUEL SCHDL: More than 5.6 ms
CMPS-RPM (POS): 3,000 - 4,800 rpm
Selector lever: Suitable position
Driving location: Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.
8. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".
OR
OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the absolute pressure sensor circuit. During this check, a 1st trip DTC might not be confirmed.
With Generic Scan Tool
1. Turn ignition switch "ON".
2. Select "MAP" in "MODE 1" with GST.
3. Make sure that the pressure of "MAP" is more than 46 kPa (0.47 kg/sq.cm, 6.7 psi).
4. If NG, go to "DIAGNOSTIC PROCEDURE".
OR
Without Scan Tools
1. Turn ignition switch "ON".
2. Make sure that the voltage between ECM terminal (64) and engine ground is more than 1.74 [V].
3. If NG, go to "DIAGNOSTIC PROCEDURE".
EC-AP/SEN-01:
EC-AP/SEN-01 Connector View:
WIRING DIAGRAM
Super Multiple Junction (SMJ) Terminal Arrangement (B3, D1, D21, E66, M4, M6, M11, M12, M45, N1):
Super Multiple Junction (SMJ) Terminal Arrangement (B4, B101, E70, E81, F63, M3, M49, M50):
DIAGNOSTIC PROCEDURE
If the trouble is duplicated after "Procedure for malfunction A or C", perform "Procedure A" below. If the trouble is duplicated after "Procedure for malfunction B", perform "Procedure B".
Part 1:
Part 2:
Procedure A
Part 1:
Part 2:
Procedure B
COMPONENT INSPECTION
Absolute pressure sensor
1. Remove absolute pressure sensor with its harness connector connected.
2. Remove hose from absolute pressure sensor.
3. Turn ignition switch "ON" and check output voltage between terminal (64) and engine ground.
The voltage should be 3.2 to 4.8 V.
4. 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 below -93.3 kPa (-700 mmHg, -27.56 inHg) or over 101.3 kPa (760 mmHg, 29.92 inHg) of pressure.
5. If NG, replace absolute pressure sensor.