NO.4 NO CHANGE FORM 4H TO 4L [WL-C, WE-C (AT)]
id0303c3802900
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4
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NO CHANGE FORM 4H TO 4L
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DESCRIPTION
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No change form 4H to 4L at neutral position.
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TROUBLESHOOTING HINTS
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• Motor component (position sensor) malfunction
• Motor component (shift motor) malfunction
• TCM malfunction
• 4x4 control module malfunction
• 4x4 switch malfunction
• Digital TR sensor malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT 4x4 SWITCH
• Is 4x4 switch OK?
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Yes
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Go to next step.
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No
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Repair or replace 4x4 switch.
Then go to step 11.
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2
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INSPECT CONTINUITY FOR 4x4 SWITCH AND 4x4 CONTROL MODULE
• Between 4x4 switch connector terminal A and 4x4 control module terminal G.
• Between 4x4 switch connector terminal B and 4x4 control module terminal F.
• Between 4x4 switch connector terminal F and ground.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between 4x4 switch and 4x4 control module.
Then go to Step 11.
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3
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INSPECT DIGITAL TR SENSOR
• Is digital TR sensor OK?
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Yes
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Go to next step.
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No
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Repair or replace digital TR sensor.
Then go to step 11.
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4
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INSPECT CONTINUITY FOR DIGITAL TR SENSOR AND 4x4 CONTROL MODULE
• Between digital TR sensor connector terminal J and 4x4 control module terminal E.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between digital TR sensor and 4x4 control module.
Then go to Step 11.
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5
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INSPECT CONTINUITY FOR 4x4 CONTROL MODULE AND MOTOR COMPONENT (SHIFT MOTOR)
• Between 4x4 control module connector terminal A, B and transfer case connector terminal C.
• Between 4x4 control module connector terminal C, D and transfer case connector terminal F.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between 4x4 control module and transfer case connector.
Then go to Step 11.
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6
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INSPECT MOTOR COMPONENT (SHIFT MOTOR)
• Is motor component (shift motor) OK?
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Yes
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Go to next step.
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No
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Repair or replace motor component.
Then go to Step 11.
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7
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INSPECT CONTINUITY FOR 4x4 CONTROL MODULE AND MOTOR COMPONENT (POSITION SENSOR)
• Between 4x4 control module connector terminal J and transfer case connector terminal E.
• Between 4x4 control module connector terminal I and transfer case connector terminal B.
• Between 4x4 control module connector terminal L and transfer case connector terminal A.
• Between 4x4 control module connector terminal H and transfer case connector terminal D.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between 4x4 control module and transfer case connector.
Then go to Step 11.
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8
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INSPECT MOTOR COMPONENT (POSITION SENSOR)
• Is motor component (position sensor) OK?
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Yes
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Go to next step.
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No
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Repair or replace motor component.
Then go to Step 11.
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9
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INSPECT FOR CONTINUITY BETWEEN 4x4 CONTROL MODULE CONNECTOR TERMINAL W, X AND GROUND
• Turn engine switch OFF.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between 4x4 control module and ground.
Then go to Step 11.
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10
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MEASURE VOLTAGE BETWEEN 4x4 CONTROL MODULE CONNECTOR TERMINAL T, Y, Z AND GROUND
• Turn engine switch ON.
• Is the voltage greater than 10 V?
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Yes
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Go to next step.
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No
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Repair related wiring harness and related fuses.
Then go to Step 11.
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11
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• Verify test results.
• If the vehicle is repaired, troubleshooting completed.
• If the vehicle is not repaired or additional diagnostic information is not available, replace the 4x4 Control Module.
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