Speedometer Head: Testing and Inspection

ON-VEHICLE INSPECTION
1. Using a speedometer tester, test the speedometer for allowable indication error, and check the operation of the odometer.

Standard indication Allowable range
km/h (mph) km/h (mph)
40 (25) 40-44 (25-27)
80 (50) 80-88 (50-55)
120 (74) 120-132 (74-82)

2. Check the speedometer for fluctuation and/or abnormal noise.

CAUTION:
a. If significant fluctuation occurs or the speedometer does not move at all, remove the speedometer cable, if normal, replace the speedometer assembly.
b. Tire wear and improper inflation will increase speedometer error.