Instrument Cluster Inspection: Tachometer

Remove the tachometer. (See INSTRUMENT CLUSTER DISASSEMBLY/ASSEMBLY .)
Measure the resistance between the tachometer terminals using an ohmmeter.
- If not as specified, replace the tachometer. (See INSTRUMENT CLUSTER DISASSEMBLY/ASSEMBLY .)
Fig 1: Tachometer Resistance Table
Courtesy of MAZDA MOTORS CORP.

Fig 2: Identifying Tachometer Connector Terminals
Courtesy of MAZDA MOTORS CORP.