Tachometer Check
TACHOMETER CHECKRequired Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A
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.
1. Connect scan tool MB991958 to the data link connector.
2. A/T select lever: "P" position or M/T shift lever: "N" position.
3. Turn the ignition switch to "ON" position.
4. Start the engine.
5. Run the engine.
6. Select MFI system data list and take a reading of the engine speed.
Item 22: CKP SENSOR
7. 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.
