Suzuki Liana RH418, Supplementary Service Manual

Page: 251 / 371

Automatic Transmission/Transaxle: 5A-25
Time Lag Test
S3RH0B5104014
This test is to check conditions of clutch, reverse 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 pressure control solenoid
valve (Low line pressure) Inspect. If NG, replace valve body assembly.
Malfunction of primary regulator valve
(Low line pressure) 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.0 and/or No.1 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 pressure control solenoid
valve (Low line pressure) Inspect. If NG, replace valve body assembly.
Malfunction of primary regulator valve
(Low line pressure) Replace valve body assembly.
Clogged oil strainer Replace.
Faulty oil pump Inspect. If NG, replace.
Faulty reverse clutch Inspect. If NG, replace.
Faulty 1st / reverse brake Inspect. If NG, replace.
Leakage from “R” range fluid pressure
circuit Overhaul or replace valve body assembly.