NO.6 OIL LEAKAGE [WL-C, WE-C (AT)]

id0303c3802500

6
OIL LEAKEGE
DESCRIPTION
The oil leaks from front differential or transfer case.
TROUBLESHOOTING HINTS
•  RFW control box malfunction
•  Conventional front differential parts malfunction
•  Transfer case malfunction
•  Improper oil level
•  Loosened sealing bolts
•  Breather clogging
•  Improper oil seal

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY RFW CONTROL BOX INSTALLATION CONDITION
•  Is RFW control box installed completely?
Yes
Go to next step.
No
Install RFW control box securely, then go to Step.
2
INSPECT CONVENTIONAL FRONT DIFFERENTIAL PARTS
•  Are they OK?
Yes
Go to next step.
No
Replace defective part (s).
3
INSPECT TRANSFER CASE
•  Is it OK?
Yes
Go to next step.
No
Replace transfer case.
4
INSPECT TRANSFER OIL LEVEL
•  Is oil level OK?
Yes
Go to next step.
No
Adjust the oil level.
5
INSPECT TRANSFER SEALING BOLTS
•  Are sealing bolts OK?
Yes
Go to next step.
No
Re-tighten the sealing bolts.
6
INSPECT BREATHER NIPPLE FOR CLOGGING
•  Is it OK?
Yes
Go to next step.
No
Clean or replace breather nipple.
7
INSPECT OIL SEAL
•  Is it OK?
Yes
Go to next step.
No
Replace damaged oil seal.
8
•  Verify test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
•  If the vehicle is repaired, troubleshooting completed.
•  If the vehicle is not repaired or additional diagnostic information is not available.