Suzuki sq-416-420-625 Service Manual page 431

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