Control Module: Testing and Inspection

INSPECTION








1. INSPECT 2-4 SELECTOR SWITCH CONTINUITY
If continuity is not as specified, replace the shift lever knob.





2. INSPECT ACTUATOR RESISTANCE
a. Using an ohmmeter, measure the resistance between terminals 2 and 3.

Standard resistance: 0.3 - 100 ohms

b. Using an ohmmeter, measure the resistance between terminals 2 or 3 and body ground.

Standard resistance: More than 0.5 M ohms

If resistance value is not as specified, replace the actuator assembly.
3. INSPECT ACTUATOR OPERATION





a. Connect lines via a relay as shown in the illustration, then check that the actuator fork shaft moves to 2WD position.





b. Connect lines via a relay as shown in the illustration, then check that the actuator fork shaft moves to 4WD position.





HINT: When inspecting the operation described above, use a heater main relay.

If operation is not as specified, replace the actuator assembly.
4. INSPECT LIMIT SWITCH CONTINUITY





a. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3.
b. Connect the positive (+) lead from the ohmmeter to terminal 5 and the negative (-) lead to terminal 4.
c. Check that there is continuity between terminals 4 and 5.





d. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2.
e. Connect the positive (+) lead from the ohmmeter to terminal 6 and the negative (-) lead to terminal 4.
f. Check that there is continuity between terminal 4 and 6.
If continuity is not as specified, replace the actuator assembly.
5. INSPECT NO.1 VEHICLE SPEED SENSOR,
6. INSPECT 4WD INDICATOR LAMP
Check the combination meter.





7. w/One touch 2-4 selector system:
INSPECT 4WD CONTROL ECU
Connect the wire harness side connector to the ECU and inspect wire harness side connector from the back side, as shown.








STANDARD VALUE OF ECU TERMINAL