TF-84
TROUBLE DIAGNOSIS FOR SYSTEM
3.CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Check continuity between ATP switch harness connector F41
terminal 9 and ground.
Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or con-
nectors.
4.CHECK ATP SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove ATP switch. Refer toTF-21, "
Location of Electrical Parts".
3. Push and release ATP switch and check continuity between ATP
switch terminals 8 and 9.
OK or NG
OK >> GO TO 5.
NG >> Replace ATP switch. Refer toTF-21, "
Location of Elec-
trical Parts".
5.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
OK or NG
OK >> GO TO 6.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
6.CHECK ATP WARNING LAMP
1. Turn ignition switch “ON”. (Do not start engine.)
2. Shift A/T selector lever to “N” position and engage the parking brake.
3. Switch 4WD shift switch from 4H to 4LO or 4LO to 4H.
Does ATP warning lamp turn
“ON”, while actuator motor is operating?
YES >>INSPECTION END
NO >> Go toTF-96, "
ATP Warning Lamp Does Not Turn ON". Continuity should exist.
SDIA2394E
Terminal Condition Continuity
8-9Push ATP switch Yes
Release ATP switch No
SDIA2395E
WT-2
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
PFP:00003
NVH Troubleshooting ChartEES002L1
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
´: ApplicableReference page
WT-3WT-4WT-6WT-4—
—
WT-6
FFD-6
(FFD)
RFD-XX “NVH Troubleshooting Chart” (RFD, M226 without LD),
RFD-XX “NVH Troubleshooting Chart” (RFD, M226 with LD)
FAX-4(FAX)
FSU-5(FSU)
RAX-5(RAX)
RSU-3(RSU)
Refer to TIRES in this chart.
Refer to ROAD WHEEL in this chart.
BR-5
PS-5
Possible cause and SUSPECTED PARTS
Out-of-round
Imbalance
Incorrect tire pressure
Uneven tire wear
Deformation or damage
Non-uniformity
Incorrect tire size
FRONT AND REAR FINAL DRIVE
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEEL
BRAKE
STEERING
SymptomTIRESNoise´ ´´´´´ ´ ´ ´ ´ ´ ´
Shake´´´´´ ´ ´ ´ ´ ´´
Vibration´´´´´´
Shimmy´ ´´´´´´ ´ ´ ´ ´ ´
Shudder´´´´´ ´ ´ ´ ´ ´´
Poor quality ride or
handling´´´´´ ´ ´ ´ ´
ROAD
WHEELNoise´´ ´ ´ ´ ´ ´´´
Shake´´ ´ ´ ´ ´´´
Shimmy, shudder´´ ´ ´ ´ ´´´
Poor quality ride or
handling´´ ´ ´ ´ ´
