Suzuki Grand Vitara XL-7 Service Manual page 433

7B1-28 AUTOMATIC TRANSMISSION (4 A / T)
TROUBLESHOOTING
Condition
Lower than standard level
Higher than standard level in Higher than standard level in
"D" range
Higher than standard level in Higher than standard level in
"R" range
High than standard level in g
both "D" and "R" range
Possible cause
Engine output torque failure
Defective one-way clutch of torque
converter
Defective pressure control solenoid
valve (Low line pressure)
Primary regulator valve
(Low line pressure)
Slippery forward clutch
Defective one-way clutch No.2
Leakage from "D" range fluid pressure
circuit
Defective pressure control solenoid
valve (Low line pressure)
Defective primary regulator valve
(Low line pressure)
Slippery direct clutch
Slippery reverse brake
Leakage from "R" range fluid pressure
circuit
Defective pressure control solenoid
valve (Low line pressure)
Defective primary regulator valve
(Low line pressure)
Clogged oil strainer
Defective O/D clutch and O/D
one-way clutch
Malfunction of oil pump
Leakage from fluid pressure circuit
Correction
Inspect and repair engine.
Replace.
Inspect.
If NG, replace valve body assembly.
Replace valve body assembly.
Replace.
Replace.
Overhaul or replace valve body
assembly.
Inspect.
If NG, replace valve body assembly.
Replace valve body assembly.
Replace.
Replace.
Overhaul or replace valve body
assembly.
Inspect.
If NG, replace valve body assembly.
Replace valve body assembly.
Wash strainer.
Replace.
Replace.
Overhaul or replace valve body
assembly.