Suzuki Grand Vitara 1998, Service Manual

Page: 431 / 801

YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-29
Gear shift
T
ransmission fluid
Running condition
Condition Possible Cause Correction
Poor 3–4 shift, ex- 3–4 shift valve sticking Replace.
cessive slippage
Shift solenoid valve-B sticking Replace.
Excessive shock on Regulator valve sticking Replace.
1–2 shift
Faulty accumulator, second brake piston Replace.
Excessive shock on
Regulator valve sticking Replace.
2–3 shift
Faulty accumulator, direct clutch piston Replace.
Excessive shock on
3–4 shift Regulator valve sticking Replace.
Non operate lock-
TCC (Lock-up) control valve sticking Replace.
up system
Solenoid valve No.2 (TCC solenoid valve)
sticking Replace.
TROUBLE DIAGNOSIS TABLE 3
Condition Possible Cause Correction
Low fluid pressure Leakage from oil pressure circuit Overhaul.
Unable to run in all
range Wear in oil pump Replace.
Seizure in oil pump Replace.
Fluid pressure leakage to over drive clutch
due to wear of oil pump bushing Replace.
Faulty in torque converter Replace.