Suzuki Grand Vitara XL-7 Service Manual page 429

7B1-24 AUTOMATIC TRANSMISSION (4 A / T)
TROUBLE DIAGNOSIS TABLE 3
OFF-VEHICLE REPAIR
Condition
Unable to run in all range
Poor 1 ! 2 shift, excessive shock or
slippage
Poor 2 ! 3 shift, excessive shock or
slippage
Poor 3 ! O/D shift, excessive
shock or slippage
Non operate TCC (lock up) system Non operate TCC (lock-up) system
Excessive "N" ! "D" time lag Excessive N ! D time lag
Excessive N ! R time lag Excessive "N" ! "R" time lag
Poor engine brake in downshift to
"2" range
Poor engine brake in downshift to
"L" range
Abnormal noise in "P" or "N" range
Possible cause
Defect in torque converter
Defective oil pump
Seized or broken planetary gear
Defective 2nd brake
Defective one-way clutch No.1
Defective direct clutch
Defective O/D brake
Defective transmission range sensor
Defect in torque converter
Defective forward clutch
Defective one-way clutch No.2
Leakage from "D" range fluid
pressure circuit
Defective direct clutch
Defective reverse brake
Leakage from "R" range fluid
pressure circuit
Defective second coast brake
Defective reverse brake
Worn oil pump
Correction
Replace.
Inspect. If NG, replace.
Repair or replace.
Replace.
Replace
Replace.
Replace.
Inspect. If NG, replace.
Replace valve body assembly.
Replace.
Replace.
Overhaul or replace valve body
assembly.
Replace.
Replace.
Overhaul or replace valve body
assembly.
Replace.
Replace.
Inspect. If NG, replace.