TACHOMETER CHECK
Required Special Tools
- MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicle Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991911: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
| CAUTION | To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. |
- Connect scan tool MB991958 to the data link connector.
- A/T select lever: "P" position.
- Turn the ignition switch to "ON" position.
- Start the engine.
- Run the engine.
- Select MFI system data list and take a reading of the engine speed. Item 22: CKP SENSOR
- Compare the engine speed shown in the scan tool with that shown on the tachometer. The engine speeds shown on the tachometer should correspond to the table below. NOTE: The following standard value assumes that battery voltage is 13.5 volts. NOTE: The value in parentheses is a reference value. ENGINE SPEED SPECIFICATION (STANDARD VALUE) ENGINE SPEED r/min TACHOMETER INDICATING TOLERANCE r/min 600 500 - 700 (2,000) (1,900 - 2,100) 3,000 2,850 - 3,150 (4,000) (3,850 - 4,150) 5,000 4,850 - 5,150 6,000 5,850 - 6,150
Scheme 332
- Remove the rear seat cushion assembly. (Refer to «REAR SEAT ASSEMBLY»(ref-278192-S26714286552008012400000) .)
- Remove hole cover and remove the fuel pump module and fuel level sensor (sub) (Refer to «FUEL TANK»(ref-265871-S00191829182007092600000) .).
Scheme 333
- Check the resistances between fuel level sensor main terminals 1 and 2 as well as sub terminals 1 and 2 of the fuel pump module, respectively. FUEL LEVEL SENSOR RESISTANCE (STANDARD VALUE) ITEM FUEL LEVEL SENSOR (main) FUEL LEVEL SENSOR (sub) Resistance ohms Point "F" (highest) 6.5 6.5 ± 1.0 Point "E" (lowest) 45.1 74.9 ± 1.0
- Check that resistance value changes smoothly when the float moves slowly between points.
- If all checks are correct, go to fuel unit height check. If any check is not correct, replace the fuel pump module or fuel level sensor (sub).
Scheme 334
Scheme 335
- Move the float and measure height A at point "F" (highest) and B at point "E" (lowest). FUEL LEVEL SENSOR FLOAT HEIGHT SPECIFICATION (STANDARD VALUE) ITEM FUEL LEVEL SENSOR (main) FUEL LEVEL SENSOR (sub) Height mm (in) A at point "F" 131.5 (5.1) 24.9 ± 3.0 (0.9 ± 0.1) B at point "E" 34.5 (1.3) 172.7 ± 3.0 (6.7 ± 0.1)
- If any check is not correct, replace the fuel pump module or fuel level sensor (sub).
