P006D

P006D-BAROMETRIC PRESSURE - INLET AIR PRESSURE CORRELATION

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on. No other IAT DTC's present in the ECM. Engine speed below 800 rpm.

- Set Condition:
The difference between the Inlet Pressure Sensor signal and the Atmospheric Pressure Sensor signal is 45 hpa (0.65 psi) for 5.0 seconds.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1. CHECK FOR ACTIVE DTC
Turn the ignition on.
With the scan tool, erase ECM DTCs.
Turn the ignition off, wait 30 seconds.
Test drive the vehicle.
With the scan tool, read ECM DTCs.
Did this DTC set again?

Yes

- Go To 2

No

- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure Intermittent Condition.

2. AIR FILTER
Turn the ignition off.
Remove and inspect the Air Filter for soiling or excessive dirt and debris which may cause air flow restriction.
Were any of these problems found?

Yes

- Replace the Air Filter element.
- Perform the ECM Verification Test Ver. 1. Verification Tests

No

- Go To 3

3. AIR RESTRICTION

NOTE: Inspect all air intake and turbocharger related tubes for damage, restriction or poor connection. Any of these conditions can cause a this DTC to set.

Inspect all air intake and turbocharger related tubes and connections.
were any problems found?

Yes

- Repair or replace as necessary.
- Perform the ECM Verification Test Ver. 1. Verification Tests

No

- Go To 4

4. HIGH RESISTANCE IN THE (K68) INLET PRESSURE SENSOR SIGNAL CIRCUIT
Disconnect the Inlet Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the (K68) Inlet Pressure Sensor Signal circuit between the Inlet Pressure Sensor harness connector and the ECM harness connector.
Is the resistance below 10.0 ohms?

Yes

- Go To 5

No

- Repair the (K68) Inlet Pressure Sensor Signal circuit for high resistance.
- Perform the ECM Verification Test Ver. 1. Verification Tests

5. HIGH RESISTANCE IN THE (K900) INLET PRESSURE SENSOR GROUND CIRCUIT
Measure the resistance of the (K900) Inlet Pressure Sensor Ground circuit between the Inlet Pressure Sensor harness connector and the ECM harness connector.
Is the resistance below 10.0 ohms?

Yes

- Go To 6

No

- Repair the (K900) Inlet Pressure Sensor Ground circuit for high resistance.
- Perform the ECM Verification Test Ver. 1. Verification Tests

6. HIGH RESISTANCE IN THE (K668) INLET PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT
Measure the resistance of the (K668) Inlet Pressure Sensor 5-volt Supply circuit between the Inlet Pressure Sensor harness connector and the ECM harness connector.
Is the resistance below 10.0 ohms?

Yes

- Replace the Inlet Pressure Sensor.
- Perform the ECM Verification Test Ver. 1. Verification Tests

No

- Repair the (K668) Inlet Pressure Sensor 5 Volt Supply circuit for high resistance.
- Perform the ECM Verification Test Ver. 1. Verification Tests