Re: 2007 Escalade ESV Service Stabilitrak & Service Traction Control Lights Code P001
Basically so far we have changed a cam position sensor which doesn't help anything a cmp actuator magnet with is cheap to fix but may not solve the problem (I am doing this tomorrow)....Next step would be to open the timing cover and change CMP Actuator Solenoid Valve (oil control valve) and the CMP actuator itself...
P0011
Conditions for Setting the DTC
Desired CMP 0-31° 0-31° 0-31°
CMP Angle
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running above 900 RPM in park
Parameter Normal Range: 0-31°
CMP Angle 0-31° 0° 0°
CMP Variance
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running above 900 RPM in park
Parameter Normal Range: 0°
CMP Variance 0-31° 0-31° 0-31°
• The ignition switch is in the Crank or Run position.
• The system voltage is between 9-18 volts.
• The CMP actuator is command ON.
• DTC P0010 runs continuously when the above conditions are met.
• DTC P0010, P0016, P0335, P0336, P0340, or P0341 is not set.
• The engine is running.
• The system voltage is between 9-18 volts.
• The CMP actuator is enabled.
• The power take off (PTO) is not active.
• The rate of change in the camshaft position is less than 7.5 degrees for 3.35 seconds.
P0011
Action Taken When the DTC Sets
Conditions for Clearing the DTC
DTC P0010 and P0011 are Type B DTCs.
Diagnostic Aids
This test procedure requires that the vehicle battery has passed a load test and is completely
charged. Refer to Battery Inspection/Test .
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Description and Operation
Camshaft Actuator System Description
Electrical Information Reference
• The ECM detects resistance greater than 2 ohms on the low reference circuit.
• The ECM detects that the CMP Angle position is more than 8 degrees difference than the
Desired CMP position.
P0011
Important: Incorrect engine oil viscosity, aftermarket engine oil additives, or engine oil that
overdue for changing, can greatly affect the performance of the camshaft actuator.
1. Ignition OFF, disconnect C112.
2. Test for less than 1 ohm of resistance between the low reference circuit ECM side, terminal E
and ground.
3. Remove the water pump from the engine. Refer to Water Pump Removal .
4. Inspect and test the remaining wire harness from C112 to the CMP solenoid for an open/high
resistance, or a short to ground.
Component Testing
Important: You must perform the Circuit/System Testing before proceeding with Component
Testing.
Static Test
Test for 5.9-6.9 ohms of resistance at 20°C, or 68°F between the solenoid control terminal 2 and
the low reference terminal 1 at the CMP actuator solenoid.
Dynamic Test
Important: Do not allow electrical current to flow through the CMP actuator solenoid for more
than 1-2 seconds, or damage to the solenoid may occur.
Point the CMP actuator solenoid vertically, towards a shop towel. Connect one end of a fused
jumper wire to the CMP actuator solenoid control circuit terminal 2 and 12 volts. Connect a second
jumper wire to the low reference circuit terminal 1 and momentarily connect to ground. The CMP
actuator solenoid should immediately extend.
Repair Instructions
If the circuits test normal, replace the CMP actuator solenoid.
If greater than 1 ohm, test the low reference circuit for an open/high resistance. If the
circuit tests normal, replace the ECM.
If the circuit tests normal, perform the component testing for the CMP actuator solenoid.
If the CMP solenoid and the circuit test normal, then refer to Camshaft Position Actuator
Magnet Cleaning and Inspection and Camshaft Position Actuator Solenoid Valve
Inspection
Dynamic Test
Important: Do not allow electrical current to flow through the CMP actuator solenoid for more
than 1-2 seconds, or damage to the solenoid may occur.
Point the CMP actuator solenoid vertically, towards a shop towel. Connect one end of a fused
jumper wire to the CMP actuator solenoid control circuit terminal 2 and 12 volts. Connect a second
jumper wire to the low reference circuit terminal 1 and momentarily connect to ground. The CMP
actuator solenoid should immediately extend.
Repair Instructions
If the circuits test normal, replace the CMP actuator solenoid.
If greater than 1 ohm, test the low reference circuit for an open/high resistance. If the
circuit tests normal, replace the ECM.
If the circuit tests normal, perform the component testing for the CMP actuator solenoid.
If the CMP solenoid and the circuit test normal, then refer to Camshaft Position Actuator
Magnet Cleaning and Inspection and Camshaft Position Actuator Solenoid Valve
Inspection .
If the resistance is not with in the specified range, then replace the CMP actuator solenoid. Refer
to Camshaft Position Actuator Magnet Replacement .
If the CMP actuator solenoid pintle does not extend, then replace the CMP actuator solenoid.
Refer to Camshaft Position Actuator Magnet Replacement .