download
REMOVAL PROCEDURE NOTE: The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor. Take care when handling the HO2S and the O2S. keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Also avoid using cleaning solvents of any type. Do not drop the HO2S or the O2S. Do not roughly handle the HO2S or the O2S. 1. Disconnect the electrical connector. 2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle. NOTE: The use of excessive force may damage the threads in the exhaust manifold/pipe. IMPORTANT: If the engine temperature is not above 48° (120° ), the C F oxygen sensor will be difficult to remove. 3. Use the J 39194-B in order to remove the heated oxygen sensor (HO2S). INSTALLATION PROCEDURE NOTE: Refer to Fastener Notice in Service Precautions. A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

download
1. Disconnect battery ground cable (14301) . 2. Disconnect fuel charging wiring (9D930) from distributor stator (12A112) (camshaft position sensor). 3. Remove stator camshaft position sensor retaining screws and distributor stator (camshaft position sensor) from camshaft position sensor housing. 4. If removing camshaft position sensor housing from the engine front cover (6019) , proceed with Removal Step 5. If camshaft position sensor housing is not being removed, proceed to Installation Step 6. 5. CAUTION: Before proceeding with this procedure, set cylinder No. 1 to 26 degrees After Top Dead Center (ATDC) of the compression stroke. Then note the position of the stator (camshaft position sensor) electrical connector. The installation procedure requires that the connector be located in the same position. Remove retaining bolt and hold-down clamp (12270) . 6. NOTE: The oil pump intermediate shaft (6A618) should be removed with the camshaft position sensor housing. Remove camshaft position sensor housing from engine front cover . Installation 1. CAUTION: If the replacement distributor stator (camshaft position sensor) does not contain a plastic locator cover tool, a special service tool such as Syncro Positioning Tool T89P-12200-A must be obtained prior to installation of the replacement distributor stator (camshaft position sensor). Failure to follow this procedure will result in improper stator (camshaft position sensor) alignment. This will result in the fuel system being out of time with the engine, possibly causing engine damage. If the plastic locator cover tool is not attached to the replacement distributor stator (camshaft position sensor), attach Syncro Positioning Tool T89P-12200-A as follows: a. Engage camshaft position sensor housing vane into the radial slot of the tool. b. Rotate tool on camshaft position sensor housing until tool boss engages notch in camshaft position sensor housing. The cover tool should be square and in contact with entire top surface of camshaft position sensor housing. 2. Transfer oil pump intermediate shaft from old camshaft position sensor housing to replacement camshaft position sensor housing. 3. CAUTION: If stator (camshaft position sensor) electrical connector is not positioned properly (for example, contacting the A/C compressor bracket), DO NOT reposition the connector by rotating the camshaft position sensor housing. This will result in the fuel system being out of time with the engine, possibly causing engine damage. Remove the camshaft position sensor housing and repeat installation procedure, beginning with Step 1. Install camshaft position sensor housing so that drive gear engagement occurs when arrow on locator tool is pointed approximately 30 degrees counterclockwise from the front face of the cylinder block (6010) . This step will locate stator (camshaft position sensor) electrical connector in the pre-removal position. 4. Install hold-down clamp and retaining bolt and tighten bolt to 20-30 Nm (15-22 lb-ft). 5. Remove Syncro Positioning Tool T89P-12200-A. 6. CAUTION: If stator (camshaft position sensor) electrical connector is not positioned properly (for example, contacting the A/C compressor bracket), DO NOT reposition the connector by rotating the camshaft position sensor housing. This will result in the fuel system being out of time with the engine, possibly causing engine damage. Remove the camshaft position sensor housing and repeat installation procedure, beginning with Step 1. Install distributor stator (camshaft position sensor) and retaining screws. Tighten screws to 2.5-3.5 Nm (22-31 lb-in). 7. Connect fuel charging wiring connector to distributor stator (camshaft position sensor). 8. Connect battery ground cable .

download
CAUTION: Prior to removal of the camshaft position sensor (CMP sensor) (12126) , set cylinder No.1 to zero degrees top dead center (TDC) of compression stroke. Then note the position of the camshaft position sensor electrical connector. The installation procedure requires the connector be located in the same position. Removal 1. Disconnect battery ground cable (14301). Refer to Section 14-01. 2. Disconnect fuel charging wiring connector from camshaft position sensor. 3. Remove camshaft position sensor retaining screws and camshaft position sensor from camshaft position sensor housing. 4. If removing camshaft position sensor housing from the cylinder block (6010), proceed with Removal Step 5. If not removing camshaft position sensor housing, proceed to Step 6 of the installation procedures. 5. Remove hold-down clamp (12270) (bolt and washer assembly). 6. NOTE: Remove the oil pump intermediate shaft (6A618) with the camshaft position sensor housing. Remove camshaft position sensor housing from cylinder block. Installation 1. CAUTION: If the replacement camshaft position sensor housing does not contain a plastic locator cover tool, a special service tool must be obtained prior to installation of the replacement camshaft position sensor. Failure to follow this procedure will result in improper camshaft position sensor alignment. This will result in the ignition fuel system being out of time with the engine, possibly causing engine damage. NOTE: For 3.0L engines, use Syncro Positioning Tool 303-589. For 3.8L engines, use Syncro Positioning Tool 303-562 (T96T-12200-A). If the plastic locator cover tool is not attached to the replacement camshaft position sensor housing, attach syncro positioning tool as follows: a. Engage camshaft position sensor housing vane into the radial slot of the tool. b. Rotate tool on camshaft position sensor housing until tool boss engages notch in camshaft position sensor housing. 2. Transfer oil pump intermediate shaft from old camshaft position sensor housing to replacement camshaft position sensor housing. 3. Install camshaft position sensor housing so drive gear engagement occurs when arrow on syncro positioning tool is pointed approximately as shown in the illustrations. This step will locate camshaft position sensor electrical connector in the pre-removal position. 4. Install hold-down clamp (washer and bolt assembly) and tighten bolt to 20-30 Nm (15-22 lb-ft). 5. Remove syncro positioning tool. 6. CAUTION: If camshaft position sensor electrical connector is not positioned properly, DO NOT reposition the connector by rotating the camshaft position sensor housing. This will result in the fuel system being out of time with the engine, possibly causing engine damage. Remove the camshaft position sensor housing and repeat installation procedure, beginning with Step 1. Install camshaft position sensor and retaining screws. On 3.0L engine, tighten screws to 2.5-3.5 Nm (23-30 lb-in). On 3.8L engine, tighten screws to 4.5-7 Nm (40-61 lb-in). 7. Connect fuel charging wiring connector to camshaft position sensor. 8. Connect battery ground cable. Refer to Section 14-01. Camshaft Position Sensor—3.0L Engine

download
The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement lambda = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide lambda range (0.7 < lambda < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at lambda = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 – 800 ° (1,292 – 1,472 ° . C F) On Board Diagnosis Logic DTC Confirmation Procedure NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11 V at idle. WITH CONSULT-II 1. Start engine and warm it up to normal operating temperature.

download
Component Description The heated oxygen sensor 2 (rear), after three way catalyst (Manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the heated oxygen sensor 1 (front) are shifted, the air fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2 (rear). this sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1 V in richer conditions to 0 V in leaner conditions. Under normal conditions the heated oxygen sensor 2 (rear) is not used for engine control
operation.