AUTOMATIC TRANSMISSION
CONDITION POSSIBLE CAUSES CORRECTION
MAXIMUM SPEED 30
km/h
1. Speed Control 30 Actuated. 1. Instruct Customer.
ENGINE DIES WHEN
TRANSMISSION IS SHIFT-
ED INTO GEAR, ALSO
NOISES IN N AND/OR P
1. PWM Valve Blocked. 1. Replace Valve.
2. Torque Converter Lock Up Con-
trol Valve Locked.
2. Enable Movement of Valve,
Remove Particle.
LEVER IN “P” POSITION
BLOCKED (BRAKE ACTI-
VATED)
1. No Vacuum Brake Booster After
Long Immobilization, Brake Pedal
Not Fully Applied/Hard Pedal.
1. Check Vacuum/ Tightness of
Brake Booster.
2. No Stoplamp Switch Signal (no
DTC IN ECM).
2. Check Contact to Stoplamp
Switch. Replace Switch if Nec-
essary.
GRUMBLING, DRONING,
JERKING WHEN TCC IS
ENGAGED
1. Slip Speed TCC to Low. 1. Switch Off Torque Converter
Lock Up Using DRB". If Com-
plaint Is Not Reproduced After-
wards, Replace PWM Valve,
Set Adaption Values to Zero.
HOWLING, HUMMING
ABOVE 4000 RPM IN
EACH GEAR
1. Oil Filter Blocked. 1. Replace Oil Filter.
2. Oil Pump. 2. Replace Oil Pump.
WHINING, SINGING 1. Gear Set Noises in 1st, 2nd, 5th
Gear.
1. Replace Transmission..
2. Intermediate Bearing Of The
Drive Shaft At 0 km/h, Only When
Cold.
2. Replace Intermediate Bear-
ing of the Drive Shaft.
$CLACK” NOISE FROM
CENTER SHIFT AREA
WHEN STOPPING OR
STARTING
1. Park Lock Solenoid. 1. Replace Shift Lever Assem-
bly.
CRACKING NOISE WHEN
LOAD CYCLE
1. Stick - Slip Between Joint Flange
and Collar Nut.
1. Install Zinc Coated Collar
Nut Together With Washer.
CHATTERING IN CENTER
CONSOLE SHIFT WHILE
ACCELERATING
1. Bushing Shift Shaft Has Too
Much Clearance.
1. Replace Shifter Lever and
Cover Plate.
HARD 2-3 UPSHIFT
WHEN STEPPING OFF
THE ACCELERATOR PED-
AL
1. Response Characteristic Control
Loop.
1. Install K2 Disc Spring.
UPSHIFT 2-3, 3-4 SLIP-
PING
1. Spring of Regulating Valve Pres-
sure control Valve Broken.
1. Replace Spring.
HARD 2-1 DOWNSHIFT
WHEN COMING TO A
STOP
1. Transmission (2-1 downshift) Not
Adapted.
1. Re-adapt Transmission.
2. TCM Software Data. 2. Flash TCM.
3. Free Wheeling Clutch F1 Defec-
tive.
Replace Free Wheeling Clutch
F1.
21 - 40 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION VA
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