Suzuki Liana RH418, Supplementary Service Manual

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5A-24 Automatic Transmission/Transaxle:
Stall Test
S3RH0B5104013
This test is to check overall performance of automatic transaxle and engine by measuring stall speed at “D” and “R”
ranges. Be sure to perform this test only when transaxle fluid is at normal operating temperature and its level is
between FULL and LOW marks.
CAUTION
!
• Do not run engine at stall more than 5 seconds continuously, for fluid temperature may rise
excessively high.
• After performing stall test, be sure to leave engine running at idle for longer than 1 minute before
another stall test.
1) Apply parking brake and block wheels.
2) Install tachometer.
3) Start engine with select lever shifted to “P”.
4) Depress brake pedal fully.
5) Shift select lever to “D” and depress accelerator pedal fully while watching tachometer. Read engine rpm quickly
when it has become constant (stall speed).
6) Release accelerator pedal immediately after stall speed is checked.
7) In the same way, check stall speed in “R” range.
8) Stall speed should be within following specification.
Engine stall speed
Standard: 2,000 – 2,400 rpm
Troubleshooting
Condition Possible cause Correction / Reference Item
Lower than standard level
in both “D” and “R” range Engine output torque failure Inspect and repair engine.
Faulty one-way clutch of torque
converter Replace torque converter.
Higher than standard
level in “D” range 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.
Slippery 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.
Higher than standard
level in “R” range 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.
Slippery reverse clutch Inspect. If NG, replace.
Slippery 1st / reverse brake Inspect. If NG, replace.
Leakage from “R” range fluid pressure
circuit Overhaul or replace valve body assembly.
Higher than standard
level in both “D” and “R”
range 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 coast clutch Inspect. If NG, replace.
Leakage from both “D” and “R” range
fluid pressure circuit Overhaul or replace valve body assembly.