slk Throttle Switch
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Filed Under (Honda) by admin on 21-12-2010
1. Check the engine oil level. Is the level OK? YES- Go to step 2 . NO- Adjust the engine oil to the proper level, then go to step 14 . 2. Turn the ignition switch ON (II). 3. Clear the DTC with the HDS. 4. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES- Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch) and the ECM/PCM. NO- Go to step 5 . 5. Check the result of step 4 . Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Failure Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Open Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) SIG Line Open Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) GND Line Open Is the test result any of the above? YES- Go to step 6 . NO- Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch). If it is OK, replace the rocker arm oil control solenoid (VTEC solenoid valve) (see step CMP SENSOR A REPLACEMENT ), then go to 14 . 6. Turn the ignition switch OFF. 7. Disconnect the rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector. 8. Check for continuity between rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector terminals No. 1 and No. 2.
Filed Under (Ford) by admin on 29-07-2010
Removal 1. Disconnect the battery ground cable. 2. Remove steering column shroud and lower the steering column. Refer to Steering Column: Service and Repair: Removal/Installation . 3. Disconnect the switch wiring at the multiple plug. 4. Remove the two nuts that retain the switch to the steering column. 5. LIFT the switch VERTICALLY UPWARD to disengage the actuator rod from the switch and remove switch. Installation 1. When installing the ignition switch, both the locking mechanism at the top of the column and the switch itself must be in LOCK position for correct adjustment. To hold the mechanical parts of the column in LOCK position, move the shift lever into PARK (with automatic transmissions) or REVERSE (with manual transmissions), turn the key to LOCK position, and remove the key. New replacement switches, when received, are already pinned in LOCK position by a metal shipping pin inserted in a locking hole on the side of the switch. 2. Engage the actuator rod in the switch. Must be inserted in the slot of the sliding, white carrier. 3. Position the switch on the column and install the retaining nuts, but do not tighten them. 4. Move the switch UP and DOWN along the column to locate the mid-position of rod lash. Tighten the two ignition switch retaining nuts (TOP NUT FIRST to minimize rod binding) to 4.51-7.34 N.m(40-65 in-lb) . 5. Remove the lockpin. Connect the battery cable, and check for proper start in PARK or NEUTRAL. Also, ensure the start circuit cannot be actuated in the DRIVE and REVERSE position and that the engine will shut off in either DRIVE, REVERSE or NEUTRAL. If the engine will not shut off in the above positions then the switch is NOT adjusted properly. The switch will have to be re-adjusted. Refer to Ignition Switch: Adjustments . 6. Raise the steering column into position at instrument panel. Refer to Steering Column: Service and Repair: Removal/Installation . 7. Confirm that accessories are deactivated with ignition switch in OFF position, and that accessories are operable with switch in RUN position.
Filed Under (Honda) by admin on 17-03-2011
SYMPTOM When the engine is first started after the vehicle has sat overnight, customers may “feel” the release of the throttle plate through the accelerator pedal. Some describe it as a one-time “pop” sensation. Customers may have trouble explaining this phenomenon because: They can’t repeat it because it only happens one time, when the engine is cold. The accelerator pedal works normally at all other times. There are no other symptoms. It may be intermittent, happening only during cooler weather. PROBABLE CAUSE The symptom is caused by normal buildup of contaminants in the throttle bore, combined with expansion and contraction of the throttle body. CORRECTIVE ACTION Partially remove the throttle body, and clean it with Honda carburetor cleaner or throttle plate and induction cleaner. REPAIR PROCEDURE 1. Remove the breather tube from the air intake duct, unclip the vacuum lines from the duct, and remove the duct from the throttle body. See Fig. 1 . Fig. 1: Removing Air Intake Duct 2. Disconnect the TPS and MAP connectors from the throttle body. 3. Remove the throttle cable and, if equipped, the cruise control actuator cable from the throttle body. 4. Remove the throttle body mounting nuts and bolts, then slide the throttle body off its studs on the intake manifold chamber. Leave the coolant hoses connected. See Fig. 2 . 5. Put a shop towel under the throttle body, open the throttle, then clean out any contaminants from the intake manifold side of the throttle body with carburetor cleaner or throttle plate and induction cleaner. See Fig. 3 . NOTE: To avoid damaging the idle air control valve (IACV), spray the cleaner through the back of the throttle body, not the front.
Filed Under (Jeep) by admin on 17-09-2010
REMOVAL 1. Raise vehicle. 2. Disconnect switch wire harness connector. 3. Pry washer lock tabs upward and remove switch attaching nut and tabbed washer. 4. Remove switch adjusting bolt. 5. Slide switch off manual valve shaft. INSTALLATION 1. Disconnect shift linkage rod from shift lever on left side of transmission. 2. Rotate manual shift lever all the way rearward. Then rotate lever forward two detent positions to Neutral. 3. Install switch on manual valve shaft and install switch adjusting bolt finger tight. Do not tighten bolt at this time. 4. Install tabbed washer on manual valve shaft and install switch attaching nut. Tighten nut to 6.9 Nm (61 inch lbs.) torque but do not bend washer lock tabs over nut at this time. 5. Verify that transmission is in Neutral. 6. Rotate switch to align neutral standard line with vertical groove on manual valve shaft. 7. Align switch standard line with groove or flat on manual valve shaft. 8. Tighten switch adjusting bolt to 13 Nm (108 inch lbs.) torque. 9. Bend at least two washer lock tabs over switch attaching nut to secure it. 10. Connect shift linkage rod to shift lever on left side of case. 11. Connect switch wires to harness and lower vehicle. 12. Check switch operation. Engine should start in Park and Neutral only.
Filed Under (GM) by admin on 04-11-2010
DESCRIPTION The Throttle Position (TP) sensor is a potentiometer. The TP sensor is connected to the throttle shaft on the throttle body. By monitoring the voltage on the signal line, the VCM calculates throttle position. As the throttle valve angle is changed (accelerator pedal moved), the TP sensor signal also changes. At a closed throttle position, the output of the TP sensor is low. As the throttle valve opens, the output increases so that at Wide Open Throttle (WOT,) the output voltage should be above 4.0 volts. PURPOSE The VCM calculates fuel delivery based on throttle valve angle (driver demand). A broken or loose TP sensor may cause intermittent bursts of fuel from an injector. This may cause an unstable idle because the VCM detects the throttle is moving.