NO.3 NO CHANGE FORM 4x2 TO 4x4 [WL-C, WE-C (AT)]
id0303c3802700
|
3
|
NO CHANGE FORM 4x2 TO 4x4
|
|
DESCRIPTION
|
4x4 system dose not operate when select 4H position.
|
|
TROUBLESHOOTING HINTS
|
• Motor component (position sensor) malfunction
• Motor component (shift motor) malfunction
• TCM malfunction
• 4x4 control module malfunction
• 4x4 switch malfunction
• Drive chain malfunction
|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
INSPECT 4x4 SWITCH
• Is 4x4 switch OK?
|
Yes
|
Go to next step.
|
|
No
|
Repair or replace 4x4 switch.
Then go to step 10.
|
||
|
2
|
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 C and 4x4 control module terminal F.
• Between 4x4 switch connector terminal F and ground.
• Is there continuity?
|
Yes
|
Go to next step.
|
|
No
|
Repair wiring harness between 4x4 switch and 4x4 control module.
Then go to Step 10.
|
||
|
3
|
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?
|
Yes
|
Go to next step.
|
|
No
|
Repair wiring harness between 4x4 control module and transfer case connector.
Then go to Step 10.
|
||
|
4
|
INSPECT MOTOR COMPONENT (SHIFT MOTOR)
• Is motor component (shift motor) OK?
|
Yes
|
Go to next step.
|
|
No
|
Repair or replace motor component.
Then go to Step 10.
|
||
|
5
|
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?
|
Yes
|
Go to next step.
|
|
No
|
Repair wiring harness between 4x4 control module and transfer case connector.
Then go to Step 10.
|
||
|
6
|
INSPECT MOTOR COMPONENT (POSITION SENSOR)
• Is motor component (position sensor) OK?
|
Yes
|
Go to next step.
|
|
No
|
Repair or replace motor component.
Then go to Step 10.
|
||
|
7
|
INSPECT FOR CONTINUITY BETWEEN 4x4 CONTROL MODULE CONNECTOR TERMINAL W, X AND GROUND
• Turn engine switch OFF.
• Is there continuity?
|
Yes
|
Go to next step.
|
|
No
|
Repair wiring harness between 4x4 control module and ground.
Then go to Step 10.
|
||
|
8
|
MEASURE VOLTAGE BETWEEN 4x4 CONTROL MODULE CONNECTOR TERMINAL T, Y, Z AND GROUND
• Turn engine switch ON.
• Is the voltage greater than 10 V?
|
Yes
|
Go to next step.
|
|
No
|
Repair related wiring harness and related fuses.
Then go to Step 10.
|
||
|
9
|
INSPECT TRANSFER
• Is transfer OK?
|
Yes
|
Go to next step.
|
|
No
|
Overhaul and check for wear and damage.
Replace if necessary.
Then go to Step 10.
|
||
|
10
|
• 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.
|
||