Suzuki Liana RH413, Service Manual

Page: 582 / 1302

5A-34 Automatic Transmission/Transaxle:
Time Lag Test
S3RH0A5104014
This test is to check conditions of clutch, brake and fluid
pressure. “Time lag” means time elapsed since select
lever is shifted with engine idling till shock is felt.
1) With chocks placed before and behind front and rear
wheels respectively, depress brake pedal.
2) Start engine.
3) With stop watch ready, shift select lever from “N” to
“D” range and measure time from that moment till
shock is felt.
4) Similarly measure time lag by shifting select lever
from “N” to “R” range.
Gear shifting time lag
“N”
→
“D”: Less than 0.7 sec.
“N”
→
“R”: Less than 1.2 sec.
NOTE
• When repeating this test, be sure to wait at
least one minute after select lever is
shifted back to “N” range.
• Engine should be warmed up fully for this
test.
• Repeat test 3 times and take average of
those data for final time lag data.
Troubleshooting
Condition Possible cause Correction / Reference Item
“N”
→
“D” time lag
exceeds specification
Malfunction of transmission fluid
temperature sensor Inspect. If NG, replace.
Malfunction of pressure control solenoid
valve Inspect. If NG, replace valve body assembly.
Faulty valve body component Replace valve body assembly.
Clogged oil strainer Replace.
Faulty oil pump Inspect. If NG, replace.
Faulty forward clutch Inspect. If NG, replace.
Faulty one-way clutch No.2 Inspect. If NG, replace.
Leakage from “D” range fluid pressure
circuit Overhaul or replace valve body assembly.
“N”
→
“R” time lag
exceeds specification
Malfunction of transmission fluid
temperature sensor Inspect. If NG, replace.
Malfunction of pressure control solenoid
valve Inspect. If NG, replace valve body assembly.
Faulty valve body component Replace valve body assembly.
Clogged oil strainer Replace.
Faulty oil pump Inspect. If NG, replace.
Faulty reverse clutch Inspect. If NG, replace.
Faulty 1st and reverse brake Inspect. If NG, replace.
Leakage from “R” range fluid pressure
circuit Overhaul or replace valve body assembly.