Reset/Learn Procedure
Reset Procedure - Performed after the throttle body is cleaned or replaced
- Ignition ON, engine OFF, perform the Idle Learn Reset in Module Setup with a scan tool.
- Engine idling, monitor the Throttle Body Idle Airflow Compensation parameter. The Throttle Body Idle Airflow Compensation value should equal 0 % and the engine should be idling at a normal idle speed.
- Clear the DTCs and return to the diagnostic that referred you here.
Learn Procedure - Performed after the ECM is programmed or replaced
- Engine idling for 3 minutes.
- Monitor the Desired Idle Speed and the actual Engine Speed with a scan tool.
- The ECM will start to learn the new idle cells and Desired Idle Speed should start to decrease.
- Ignition OFF for 60 s.
- Engine idling for 3 minutes.
- After the 3 minute run time the engine speed should return to normal. NOTE: During the drive cycle monitor the DTC information with a scan tool to verify DTC P0506 and P0507 do not set. If DTC P0506 and P0507 set, clear the DTCs so the ECM can continue to learn. If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
- After the drive cycle, the engine speed should return to normal. If the engine idle speed has not been learned, turn OFF the ignition for 60 s and repeat step 6.
- Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.
Scheme 32
Scheme 32: Engine Coolant Temperature Sensor Replacement
| Callout | Component Name |
|---|
| 1 | Engine Coolant Temperature Sensor CAUTION: Refer to Fastener Caution . Procedure Disconnect the electrical connector. Tighten 20 N.m (15 lb ft) |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Engine Coolant Temperature Sensor Replacement
Scheme 33
Scheme 33: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement
| Callout | Component Name |
|---|
| 1 | Mass Airflow Sensor Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 4 N.m(35 lb in) |
| 2 | Mass Airflow Sensor Procedure Disconnect the electrical connector. |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Mass Airflow Sensor with Intake Air Temperature Sensor Replacement
Scheme 34
Scheme 34: Manifold Absolute Pressure Sensor Replacement
| Callout | Component Name |
|---|
| Preliminary Procedure Remove the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement |
| 1 | Manifold Absolute Pressure Sensor Fastener CAUTION: Refer to Fastener Caution . Procedure Disconnect the electrical connector. Tighten 4 N.m (35 lb in) |
| 2 | Manifold Absolute Pressure Sensor |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Manifold Absolute Pressure Sensor Replacement
Scheme 35
Scheme 35: Heated Oxygen Sensor Replacement - Sensor 1
| Callout | Component Name |
|---|
| Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . |
| 1 | Heated Oxygen Sensor CAUTION: Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Do not use cleaning solvents of any type. Do not repair the wiring, connector or terminals. Replace the oxygen sensor if the pigtail wiring, connector, or terminal is damaged. This external clean air reference is obtained by way of the oxygen sensor signal and heater wires. Any attempt to repair the wires, connectors, or terminals could result in the obstruction of the air reference and degraded sensor performance. The following guidelines should be used when servicing the heated oxygen sensor: Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor causing poor performance. Do not damage the sensor pigtail and harness wires in such a way that the wires inside are exposed. This could provide a path for foreign materials to enter the sensor and cause performance problems. Ensure the sensor or vehicle lead wires are not bent sharply or kinked. Sharp bends or kinks could block the reference air path through the lead wire. Do not remove or defeat the oxygen sensor ground wire, where applicable. Vehicles that utilize the ground wired sensor may rely on this ground as the only ground contact to the sensor. Removal of the ground wire will cause poor engine performance. Ensure that the peripheral seal remains intact on the vehicle harness connector in order to prevent damage due to water intrusion. The engine harness may be repaired using Packard's Crimp and Splice Seals Terminal Repair Kit. Under no circumstances should repairs be soldered since this could result in the air reference being obstructed. CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . TIP: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-sieze compound applied before reinstallation. Tighten 42 N.m (31 lb in) |
| CAUTION |
|---|
| Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Do not use cleaning solvents of any type. Do not repair the wiring, connector or terminals. Replace the oxygen sensor if the pigtail wiring, connector, or terminal is damaged. This external clean air reference is obtained by way of the oxygen sensor signal and heater wires. Any attempt to repair the wires, connectors, or terminals could result in the obstruction of the air reference and degraded sensor performance. The following guidelines should be used when servicing the heated oxygen sensor: Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor causing poor performance. Do not damage the sensor pigtail and harness wires in such a way that the wires inside are exposed. This could provide a path for foreign materials to enter the sensor and cause performance problems. Ensure the sensor or vehicle lead wires are not bent sharply or kinked. Sharp bends or kinks could block the reference air path through the lead wire. Do not remove or defeat the oxygen sensor ground wire, where applicable. Vehicles that utilize the ground wired sensor may rely on this ground as the only ground contact to the sensor. Removal of the ground wire will cause poor engine performance. Ensure that the peripheral seal remains intact on the vehicle harness connector in order to prevent damage due to water intrusion. The engine harness may be repaired using Packard's Crimp and Splice Seals Terminal Repair Kit. Under no circumstances should repairs be soldered since this could result in the air reference being obstructed. |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Heated Oxygen Sensor Replacement - Sensor 1
Scheme 36
Scheme 36: Heated Oxygen Sensor Replacement - Sensor 2
| Callout | Component Name |
|---|
| Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . |
| 1 | Heated Oxygen Sensor CAUTION: Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Do not use cleaning solvents of any type. Do not repair the wiring, connector or terminals. Replace the oxygen sensor if the pigtail wiring, connector, or terminal is damaged. This external clean air reference is obtained by way of the oxygen sensor signal and heater wires. Any attempt to repair the wires, connectors, or terminals could result in the obstruction of the air reference and degraded sensor performance. The following guidelines should be used when servicing the heated oxygen sensor: Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor causing poor performance. Do not damage the sensor pigtail and harness wires in such a way that the wires inside are exposed. This could provide a path for foreign materials to enter the sensor and cause performance problems. Ensure the sensor or vehicle lead wires are not bent sharply or kinked. Sharp bends or kinks could block the reference air path through the lead wire. Do not remove or defeat the oxygen sensor ground wire, where applicable. Vehicles that utilize the ground wired sensor may rely on this ground as the only ground contact to the sensor. Removal of the ground wire will cause poor engine performance. Ensure that the peripheral seal remains intact on the vehicle harness connector in order to prevent damage due to water intrusion. The engine harness may be repaired using Packard's Crimp and Splice Seals Terminal Repair Kit. Under no circumstances should repairs be soldered since this could result in the air reference being obstructed. CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . TIP: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-sieze compound applied before reinstallation. Tighten 42 N.m (31 lb in) |
| CAUTION |
|---|
| Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Do not use cleaning solvents of any type. Do not repair the wiring, connector or terminals. Replace the oxygen sensor if the pigtail wiring, connector, or terminal is damaged. This external clean air reference is obtained by way of the oxygen sensor signal and heater wires. Any attempt to repair the wires, connectors, or terminals could result in the obstruction of the air reference and degraded sensor performance. The following guidelines should be used when servicing the heated oxygen sensor: Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor causing poor performance. Do not damage the sensor pigtail and harness wires in such a way that the wires inside are exposed. This could provide a path for foreign materials to enter the sensor and cause performance problems. Ensure the sensor or vehicle lead wires are not bent sharply or kinked. Sharp bends or kinks could block the reference air path through the lead wire. Do not remove or defeat the oxygen sensor ground wire, where applicable. Vehicles that utilize the ground wired sensor may rely on this ground as the only ground contact to the sensor. Removal of the ground wire will cause poor engine performance. Ensure that the peripheral seal remains intact on the vehicle harness connector in order to prevent damage due to water intrusion. The engine harness may be repaired using Packard's Crimp and Splice Seals Terminal Repair Kit. Under no circumstances should repairs be soldered since this could result in the air reference being obstructed. |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Heated Oxygen Sensor Replacement - Sensor 2
Scheme 37
Scheme 37: Accelerator Pedal with Position Sensor Assembly Replacement
| Callout | Component Name |
|---|
| Preliminary Procedures Remove the instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side (Equinox) , Instrument Panel Insulator Panel Replacement - Left Side (Terrain) . Remove the Communication Interface Module. Refer to Communication Interface Module Replacement . |
| 1 | Accelerator Pedal Fastener (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 8 N.m (71 lb in) |
| 2 | Accelerator Pedal Position Sensor Procedure Disconnect the electrical connector. |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Accelerator Pedal with Position Sensor Assembly Replacement
Scheme 38
Scheme 38: Throttle Body Assembly Replacement
| Callout | Component Name |
|---|
| Preliminary Procedure Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement |
| 1 | Throttle Body Assembly Fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Procedure Disconnect the electrical connector. Tighten 10 N.m (89 lb in) |
| 2 | Throttle Body Assembly Procedure Disconnect the electrical connector. Use a NEW throttle body O-ring. Perform the throttle learn procedure. Refer to Throttle/Idle Learn . |
| CAUTION |
|---|
| Refer to Fastener Caution . |
Throttle Body Assembly Replacement
Fuel Tank Draining
- CH 45004 Fuel Tank Drain Hose
- CH 48027 Digital Fuel Pressure Gauge
For regional equivalent tools refer to Special Tools .
For any operation requiring removal of the fuel tank, there should be no more than 11.4 L (3 gal) of fuel remaining. This minimizes the weight of the fuel tank assembly and eases handling. The fuel level can be determined by reading the fuel level gauge. A reading below 1/4 full indicates that no more than 11.4 L (3 gal) are remaining.
