ION 2006-2007

2.0L L4 VIN P Std 5

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Trouble Code: P0722



Output Speed Sensor Circuit Low Voltage

Trouble Code: P0723



Output Speed Sensor Circuit Intermittent

Trouble Code: P0724



Brake Switch Circuit High Voltage

Possible Causes:



In order to avoid a misdiagnosis, inspect for proper adjustment of the cruise control release switch. Refer to Cruise Release Switch Adjustment . For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0741



Torque Converter Clutch (TCC) System - Stuck Off

Possible Causes:



Inspect the transmission fluid level.
 
The transmission may be in hot mode. Inspect the transmission fluid lines to the radiator. The lines may be pinched, plugged or twisted.
 

Trouble Code: P0741



Torque Converter Clutch (TCC) System - Stuck Off

Possible Causes:



Inspect the transmission fluid level.
 
The transmission may be in hot mode. Inspect the transmission fluid lines to the radiator. The lines may be pinched, plugged or twisted.
 
It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0742



Torque Converter Clutch (TCC) System - Stuck On

Possible Causes:



DTC P0742 could be falsely set due to default actions from another DTC set. If DTC P0842, U0073, or U0100 are also set, diagnose those DTCs first.
 
Rapid fluctuation in line pressure could set DTC P0742.
 
Inspect for a pressure regulator condition.
 
Inspect for abnormal high or low line pressure.
 
The customer may notice an engine stalling condition.
 

Trouble Code: P0742



Torque Converter Clutch (TCC) System - Stuck On

Possible Causes:



DTC P0742 could be falsely set due to default actions from another DTC set. If DTC P0842, U0073, or U0100 are also set, diagnose those DTCs first.
 
Rapid fluctuation in line pressure could set DTC P0742.
 
Inspect for a pressure regulator condition.
 
Inspect for abnormal high or low line pressure.
 
The customer may notice an engine stalling condition.
 
It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0751



1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

Possible Causes:



If you clear DTC P0751, and then cannot set DTC P0751 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0751



1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

Possible Causes:



If you clear DTC P0751, and then cannot set DTC P0751 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0752



1-2 Shift Solenoid Valve Performance - No Second or Third Gear

Possible Causes:



If you clear DTC P0752, and then cannot set DTC P0752 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0752



1-2 Shift Solenoid Valve Performance - No Second or Third Gear

Possible Causes:



If you clear DTC P0752, and then cannot set DTC P0752 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0756



2-3 Shift Solenoid Valve Performance - No First or Second Gear

Possible Causes:



If you clear DTC P0756, and then cannot set DTC P0756 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0756



2-3 Shift Solenoid Valve Performance - No First or Second Gear

Possible Causes:



If you clear DTC P0756, and then cannot set DTC P0756 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0757



2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

Possible Causes:



If you clear DTC P0757, and then cannot set DTC P0757 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0757



2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

Possible Causes:



If you clear DTC P0757, and then cannot set DTC P0757 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0833



Clutch Pedal Switch 2 Circuit

Trouble Code: P0842



Transmission Fluid Pressure (TFP) Sensor Circuit Low Voltage

Possible Causes:



The default actions from DTC P0842 can cause DTC P0742 to falsely set. If DTC P0742 is also set, diagnose DTC P0842 first.
 
Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0843



Transmission Fluid Pressure (TFP) Sensor Circuit High Voltage

Possible Causes:



Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0961



Line Pressure Control (PC) Solenoid System Performance

Trouble Code: P0973



1-2 Shift Solenoid (SS) Control Circuit Low Voltage

Trouble Code: P0974



1-2 Shift Solenoid (SS) Control Circuit High Voltage

Trouble Code: P0976



2-3 Shift Solenoid (SS) Control Circuit Low Voltage

Trouble Code: P0977



2-3 Shift Solenoid (SS) Control Circuit High Voltage

Trouble Code: P1101



Intake Air Flow System Performance

Possible Causes:



Any condition that can cause the MAF, SCIP, and TP sensors to be shifted in value at the same time will cause this DTC to set.
 
A wide open throttle (WOT) acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-6 g/s at idle to 180 g/s or more at the time of the 2-3 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
 
A skewed or stuck engine coolant temperature (ECT) or IAT sensor 1 will cause the calculated models to be inaccurate and may cause this DTC to run when it should not.
 
A skewed MAP sensor may cause this DTC to set.
 
A steady or intermittent high resistance of 15 ohms or more on the ignition 1 voltage circuit will cause the MAF sensor values to be skewed high by up to 60 gs, and may cause this DTC to set. A high resistance will cause a driveability concern before this DTC sets.
 
The BARO that is used by the PCM to calculate the airflow models is initially based on the BARO sensor at key ON. With the ignition ON and the engine OFF, the BARO Sensor parameter varies with the altitude. 101 kPa is the approximate value near sea level. This value will decrease by approximately 3 kPa for every 305 meters (1,000 feet) of altitude. Refer to Altitude Versus Barometric Pressure .
 
If the condition is intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P1106



Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage

Trouble Code: P1107



Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage.

Trouble Code: P1111



Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

Trouble Code: P1112



Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage.

Trouble Code: P1114



Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage

Trouble Code: P1115



Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage

Trouble Code: P1133



HO2S Insufficient Switching Sensor 1

Trouble Code: P1134



HO2S Transition Time Ratio Sensor 1

Trouble Code: P1174



Fuel Trim Cylinder Balance

Possible Causes:



The Fuel Trim Cylinder Balance diagnostic is very sensitive to HO2S design. A non-OE sensor or an incorrect part number may set a false DTC.
 
Monitoring the misfire current counters, or misfire graph, may help to isolate the cylinder that is causing the condition.
 

Trouble Code: P1182



Supercharger Inlet Pressure (SCIP) Sensor Performance

Trouble Code: P1183



Supercharger Inlet Pressure (SCIP) Sensor Circuit Low Voltage

Trouble Code: P1184



Supercharger Inlet Pressure (SCIP) Sensor Circuit High Voltage

Trouble Code: P1400



Cold Start Emission Reduction Control System

Possible Causes:



Any loading of the engine that lowers engine RPM, such as with partial application of the clutch, during the first 70 seconds of engine run time may set this DTC.
 

Trouble Code: P1400



Cold Start Emission Reduction Control System

Possible Causes:



Any loading of the engine that lowers engine RPM, such as partial application of the clutch, A/C cycling, etc. during the first 120 seconds of the engine run time may set this DTC.
 

Trouble Code: P1516



Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

Possible Causes:



The throttle valve are spring loaded to a slightly open position.
 
The throttle valve should be open approximately 20 percent. This is referred to as the rest position.
 
The throttle valve should not be completely closed nor should they be open any more than the specified amount.
 
The throttle valve should move open and to the closed position without binding under the normal spring pressure.
 
The throttle should NOT be free to move open or closed WITHOUT spring pressure.
 
Replace the throttle body if any of these conditions are found.
 
Important: Operating the throttle blade with the Throttle Blade Control function of the scan tool may cause additional DTCs to set. Do not attempt to diagnose DTCs set during this function.
 
The scan tool has the ability to operate the throttle control system using Special Functions. Actuate the throttle valve using the throttle blade control function located in the throttle actuator control (TAC) system menu. This function will operate the throttle valve through the entire range in order to determine if the throttle body and system operate correctly.
 
Inspect for the following conditions:

Use the J 35616 Connector Test Adapter Kit for any test that requires probing the PCM harness connector or a component harness connector.
 
Poor connections at the PCM or at the component--Inspect the harness connectors for a poor terminal to wire connection. Refer to Testing for Intermittent Conditions and Poor Connections for the proper procedure.
 
If the condition is intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

 

Trouble Code: P1540



Air Conditioning (A/C) Refrigerant Overpressure - Air Conditioning (A/C) Disabled

Possible Causes:



If DTC P1540 is stored as a history code it indicates that the ECM/PCM did receive a high A/C refrigerant pressure message. This code could also be caused by an intermittent short to voltage on the sensor signal circuit, which would cause the ECM/PCM to set DTC P0533. The code could be the result of an actual A/C refrigerant high-pressure condition.
 
It is possible for the refrigerant system pressure to exceed 2,951 kPa (428 psi) during extended engine idle speed with A/C on when engine coolant temperatures are greater than 123°C (253°F). This could be caused by:

An overcharged A/C system
 
A failed A/C pressure sensor
 
Blockage in a refrigerant line
 
Debris in front of the A/C condenser
 
Radiator or A/C condenser air shields missing or out of location
 
Inoperative engine cooling fans
 
Extended periods at idle in city traffic followed by rapid acceleration
 
Aftermarket products affecting cooling system performance
 

Refer to Testing for Intermittent Conditions and Poor Connections .
 

 
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