CRX Si L4-1590cc 1.6L SOHC (D16A6) MFI (1988)
Speedometer Head: Testing and Inspection
Nippon Seiki Type
1. Remove the gauge assembly from the dashboard, then turn it over.
Speed Pulser Test (Nippon Seiki Type)
2. Insert a pencil into the speedometer cable connector socket and turn it.
Connect an ohmmeter between the A and B terminals. There should be continuity 4 times between the A and B terminals per revolution.