Infiniti QX4 (R50). Manual — part 570
Diagnostic Worksheet
NBTF0013S0202
1.
l
Listen to customer complaints.
2.
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Check transfer fluid.
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Leakage
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Fluid condition
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Fluid level
3.
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Road testing
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1. Check before engine is started.
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2. Check at idle.
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3. Cruise test
4.
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Perform self-diagnosis NG items (with CONSULT-II and without CONSULT-II).
5.
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Check component. Repair or replace the damaged parts.
6.
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Perform final check. Perform road test (1 through 3).
TROUBLE DIAGNOSIS — INTRODUCTION
Introduction (Cont’d)
TF-42
Work Flow
=NBTF0014
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
NBTF0014S01
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a problem. It is important to fully understand the symptoms
or conditions for a customer complaint.
Make good use of the two sheets provided, “Information from Customer” (Refer to TF-41.) and “Diagnostic
Worksheet” (Refer to TF-42.), to perform the best troubleshooting possible.
MTF013A
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — INTRODUCTION
Work Flow
TF-43
Listen to Customer Complaints
NBTF0015
I
Each customer feels differently about a problem. It is important
to fully understand the symptoms or conditions for a customer
complaint.
I
Listen to the customer about how and when the malfunction
occurs, and make good use of it when performing the road test.
Transfer Fluid Check
NBTF0016
I
Check fluid for leaks and fluid level. Refer to MA-22, “Check-
ing All-mode 4WD Transfer Fluid”.
SMT089D
Road Test
NBTF0017
PREPARATION FOR ROAD TEST
NBTF0017S01
I
The purpose of the test is to determine overall performance of
transfer and analyze causes of problems.
I
The road test consists of the following three parts:
I
When a malfunction is found in any part of transfer, perform the
road test to locate the malfunction area and repair the malfunc-
tion parts.
1.
Check before engine is started
2.
Check at idle
3.
Cruise test
I
Perform road test and place checks for NG items on the diag-
nostic worksheet. Refer to TF-42.
TROUBLE DIAGNOSIS — BASIC INSPECTION
Listen to Customer Complaints
TF-44
1. CHECK BEFORE ENGINE IS STARTED
=NBTF0017S02
1
CHECK 4WD SHIFT INDICATOR LAMP
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move A/T selector lever to “P” position.
4. Set 4WD shift switch to “4H” position.
SMT849D
5. Set 4WD shift switch to “2WD” position.
6. Turn ignition switch to “ON” position. (Do not start engine.)
7. Does 4WD shift indicator lamp turn ON for approx. 1 second?
SMT958D
Yes or No
Yes
©
GO TO 2.
No
©
Go to Symptom 1. Refer to TF-98.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
Road Test (Cont’d)
TF-45
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