Line Pressure Test - Suzuki Liana RH413 Service Manual

Line Pressure Test

Purpose of this test is to check operating conditions of
each part by measuring fluid pressure in fluid pressure
line.
Line pressure test requires the following conditions.
• Automatic fluid is at normal operating temperature (70
– 80 °C / 158 – 176 °F).
• Fluid is replenished to proper level between FULL and
LOW on dipstick.
• Air conditioner switch is turned OFF.
1) Apply parking brake securely and place chocks
against wheels.
2) Remove right side engine under cover.
3) Remove fluid pressure check hole plug bolt.
4) Attach oil pressure gauge to fluid pressure check
hole in transaxle case.
Special tool
(A): 09925-37811-001
CAUTION
!
After attaching oil pressure gauge, check that
no fluid leakage exists.
Troubleshooting
Condition
Higher than standard
level in each range
Lower than standard level
in each range
Lower than standard level
only in "D" range
Lower than standard level
only in "R" range
S3RH0A5104015
Possible cause
Malfunction of pressure control solenoid
valve
Faulty valve body component
Malfunction of pressure control solenoid
valve
Faulty valve body component
Clogged oil strainer
Faulty oil pump
Leakage from both "D" and "R" range
fluid pressure circuit
Leakage from "D" range fluid pressure
circuit
Leakage from "R" range fluid pressure
circuit
Automatic Transmission/Transaxle:
(A)
5) Depress foot brake fully, run engine at idle and stall
then check fluid pressure in "D" or "R" range.
CAUTION
!
• Do not continue running engine at stall
speed longer than 5 seconds.
• After performing line pressure test, be sure
to leave engine running at idle for longer
than one minute before performing another
line pressure test.
Automatic transaxle line pressure
"D" range
At idle 3.7 – 4.1 kg/cm
speed 53 – 58 psi
At stall 12.5 – 13.7 kg/cm
speed 178 – 195 psi
Correction / Reference Item
Inspect. If NG, replace valve body assembly.
Replace valve body assembly.
Inspect. If NG, replace valve body assembly.
Replace valve body assembly.
Replace.
Inspect. If NG, replace.
Overhaul or replace valve body assembly.
Overhaul or replace valve body assembly.
Overhaul or replace valve body assembly.
5A-35
I2RH0B510016-01
"R" range
2 , 5.9 – 6.8 kg/cm 2 ,
84 – 97 psi
, 16.5 – 19.0 kg/cm ,
2 2
235 – 270 psi