DTC P0069
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P0069: Manifold Absolute Pressure-Barometric Pressure Correlation Difference between barometric pressure and boost pressure is higher than specified value. (1 D/C detection logic) |
•Boost pressure sensor and/or its circuit
•Barometric pressure sensor (in ECM) •ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A3: | Boost pressure sensor ground circuit | 2. | Boost pressure sensor |
| A1: | Boost pressure sensor power supply circuit | B1: | IAT sensor-2 signal circuit | 3. | IAT sensor-2 |
| A2: | Boost pressure sensor signal circuit | 1. | ECM |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Boost pressure sensor power supply circuit and ground circuit check
1)When ignition is “OFF”, disconnect connector of boost pressure sensor with IAT sensor-2.
2)Check for proper terminal connection to connector of boost pressure sensor with IAT sensor-2.
3)If connections are OK, set ignition “ON”.
4)Check that voltage between “A1” and “A3” circuits is approx. 5 V.
Is check result OK?
|
Go to Step 5.
|
Go to Step 3.
|
| 3 |
Boost pressure sensor ground circuit check
1)Check that voltage between “A1” circuit and ground is approx. 5 V.
Is check result OK?
|
Repair “A3” circuit.
|
Go to Step 4.
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| 4 |
Boost pressure sensor power supply circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM.
2)Check for proper terminal connection to “D01” connector.
3)If connections are OK, check the following points.
•Resistance of “A1” circuit: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and other terminal at connector of boost pressure sensor with IAT sensor-2: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 5.
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Repair or replace defective wire harness.
|
| 5 |
Boost pressure sensor signal circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM.
2)Check for proper terminal connection to “D01” connector.
3)If connections are OK, check the following points.
•Resistance of “A2” circuit: less than 1 Ω
•Resistance between “A2” circuit and ground: infinity •Resistance between “A2” circuit terminal and other terminal at boost pressure sensor with IAT sensor-2 connector: infinity •Voltage of “A2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 6.
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Repair or replace defective wire harness.
|
| 6 |
Boost pressure sensor check
1)Check boost pressure sensor.
Is check result OK?
|
Replace ECM and recheck DTC.
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Replace boost pressure sensor with IAT sensor-2.
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