Gear Sensor/Switch: Testing and Inspection

4H and4L switch





Check whether the 4H (terminals 4 and 7) and 4L switch (terminals 1, 2 and 3) work as specified in the table. If yes, the continuity is established on these switch. If not, check the switch, shift rails, transfer case, and rear cover, and replace the failed parts.

Power GND
Check that there is a continuity between the power GND pin (terminal 7) and transfer case. If not, replace the grounding wire.

Resistance Of Electromagnetic Coil
Check the resistance between electromagnetic clutch solenoid (terminal 8) and power GND (terminal 7). If not, replace the electromagnetic coil.
Standard: 1.4 - 2.0 ohms
Allowable: 1.0 - 5.0 ohms