J: Speedometer/Odometer Inoperative, Ranger and Explorer

J1 CHECK CONNECTIONS


^ Verify quick connect is properly attached at speedometer.


^ Check square drive tip of the speedometer cable housing assembly at transmission end of speedometer cable and housing assembly to make sure it is properly seated in the vehicle speed sensor.


^ Are connections good and is drive tip seated properly?


Yes

GO to J2.


No

RESEAT drive tip if not seated properly. CHECK to see if speedometer is now operative.



J2 CHECK ROTATION


^ Rotate gear to assure speedometer cable and housing assembly is free and not bound up.


^ Does speedometer cable and housing assembly rotate freely?


Yes

GO to J3.


No

REPLACE cable and housing assembly.



J3 CHECK ODOMETER/POINTER

^ Check operation of odometer/pointer.


^ Does the odometer operate and the speedometer pointer not operate?


Yes

GO to J4.


No

REPLACE speedometer. RECHECK speedometer for operation.



J4 CHECK SPEEDOMETER POINTER


^ Check operation of speedometer pointer.


^ Does the ODOMETER/POINTER operate?


Yes

GO to J5.


No

REPLACE speedometer. RECHECK speedometer for operation.



J5 CHECK SPEEDOMETER


^ Disconnect speedometer cable and housing assembly and check that magnet shaft in speedometer turns freely. By rotating with a short section of cable core.


^ Does magnet shaft turn freely?


Yes

GO to J6.


No

REPLACE speedometer. RECHECK speedometer for operation.



J6 CHECK VEHICLE SPEED SENSOR


^ Disconnect speedometer cable and housing assembly from vehicle speed sensor and check that shaft in vehicle speed sensor turns freely.


^ Does shaft turn freely?


Yes

GO to J7.


No

REPLACE vehicle speed sensor. CHECK speedometer for operation.



J7 CHECK GEARS


^ Check drive gear and driven gear for damage or wear.


^ Check drive tip on both ends of the speedometer cable and housing assembly for wear.


^ Is drive gear, drive tip or driven gear damaged?


Yes

REPLACE damaged or worn gear or speedometer cable and housing assembly. CHECK speedometer for operation.


No

GO to J8.



J8 CHECK SPEEDOMETER CABLE AND HOUSING ASSEMBLY CABLE


^ Check speedometer cable and housing assembly for kinks or improper routing.


^ Are there kinks in speedometer cable and housing assembly or cable and housing assembly damaged or will not turn?


Yes

REPLACE speedometer cable and housing assembly. CHECK speedometer for operation.


No

System OK.