Tachometer Check

WARNING: This page is about a different car, the 2004 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991911: MUT-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 SENSO>
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 Fig 1.
NOTE: The following standard value assumes that battery voltage is 13.5 volts.

Fig 1: Connecting Scan Tool (MB991958) To Data Link Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: Identifying Standard Value Chart
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.