SAAB WIS ONLINE

DTC P000A or P000B

DTC P000A or P000B

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptors

DTC P000A

Intake Camshaft Position System Slow Response

DTC P000B

Exhaust Camshaft Position System Slow Response

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Intake CMP Actuator Ignition 1 Voltage

-

P0010

-

-

Intake CMP Actuator Solenoid Control

P0010, P2088

P0010

P0010, P2089

P000A

Exhaust CMP Actuator Ignition 1 Voltage

-

P0013

-

-

Exhaust CMP Actuator Solenoid Control

P0013, P2090

P0013

P0013, P2091

P000B



Circuit/System Description

The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The CMP actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator controls the oil forward or backward flow which applies the pressure that changes the setting of the camshaft forward or backward.

Conditions for Running the DTC


• The engine speed is greater than 520 RPM.

• The engine control module (ECM) has enabled the CMP actuator.

• The calculated engine oil temperature is between -48 and +180°C (-54 and +356°F).

• The engine coolant temperature is between -48 and +143°C (-54 and +289°F).

• The CMP actuator is steady for 2 s.

• DTCs P000A and P000B run continuously when the above conditions are met.


Conditions for Setting the DTC

The ECM detects that the difference between the desired CMP actuator angle and the actual CMP actuator angle is more than 8 degrees for greater than for 20 s.

Action Taken When the DTC Sets

DTCs P000A and P000B are type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P000A and P000B are type B DTCs.

Diagnostic Aids


• The engine oil condition has a major impact on the camshaft actuator system.

• A low oil level can activate this DTC. The engine may need an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life parameter. Advise the customer an oil change may be required.

• Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing chain can cause this DTC to set.

• A Camshaft Position Actuator Solenoid Valve or an camshaft actuator that is stuck can cause this DTC to set.


Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Camshaft Actuator System Description

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Note

The engine oil level and the oil pressure are critical to the correct operation of the camshaft position actuator system. Verify that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic. Refer to Oil Pressure Diagnosis and Testing .



1. Ignition ON, observe the scan tool DTC information. Verify that DTC P0016, P0017, P0335, P0336, P0338, P0341, P0342, P0343, P0366, P0367, P0368, P0638, P2100, P2101, or P2119 is not set.

2. If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

3. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.


Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.

2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.

3. If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.

4. Connect a DMM, set on the diode setting, between the control circuit terminal B and ground. The voltage should be greater than 2 V.

5. If the DMM displays OL, test the control circuit for a short to voltage or an open/high resistance. If the circuit/connections test normal, replace the K20 Engine Control Module.

6. If less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

7. Command the Camshaft Position Actuator Solenoid Valve ON and OFF with a scan tool. The DMM should transition from greater than 2 V when commanded OFF to less than 1 V, when commanded ON.

8. If the circuit voltage does not correspond to the specified values, replace the K20 Engine Control Module.

9. Remove the Camshaft Position Actuator Solenoid Valve. Verify the following conditions do not exist with the Camshaft Position Actuator Solenoid Valve:

• Torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid

• Engine oil leak between the oil sealing lands of the CMP actuator solenoid. Inspect the lands of the CMP actuator solenoid for nicks.

• Oil seepage at the CMP actuator solenoid connector

10. If a condition is found, replace Q6 Camshaft Position Actuator Solenoid Valve.

11. Ignition OFF, swap the appropriate Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is operating correctly.

12. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states

13. If greater than the specified value, replace the mechanical camshaft position actuator.

14. If all circuits/connections test normal, test or replace the Q6 Camshaft Position Actuator Solenoid Valve.


Component Testing


1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.

2. Test for 7-12 Ω between the control terminal B and the ignition terminal A of the Q6 Camshaft Position Actuator Solenoid Valve.

3. If not within the specified range, replace the Q6 Camshaft Position Actuator Solenoid Valve.

4. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve housing.

5. If not the specified value, replace the Q6 Camshaft Position Actuator Solenoid Valve.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Camshaft Position Actuator Solenoid Valve Replacement (Exhaust) Camshaft Position Actuator Solenoid Valve Replacement (Intake)

• Camshaft Position Exhaust Actuator Replacement

• Camshaft Position Intake Actuator Replacement

• Control Module References for Engine Control Module replacement, setup, and programming