Time Lag Test; Line Pressure Test - Suzuki 2006 SX4 Service Manual

5A-32 Automatic Transmission/Transaxle:

Time Lag Test

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
→
"N" "D" time lag
exceeds specification
→
"N" "R" time lag
exceeds specification

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 fluid pressure check hole plug bolt.
3) Attach oil pressure gauge to fluid pressure check hole in transaxle case.
Special tool
(A): 09925–37811–001
Possible cause
Malfunction of transmission fluid
temperature sensor
Malfunction of pressure control solenoid
valve (Low line pressure)
Faulty valve body component
Clogged oil strainer
Faulty oil pump
Faulty forward clutch
Faulty one-way No.2 clutch
Leakage from "D" range fluid pressure
circuit
Malfunction of transmission fluid
temperature sensor
Malfunction of pressure control solenoid
valve (Low line pressure)
Faulty valve body component
Clogged oil strainer
Faulty oil pump
Faulty reverse clutch
Faulty 1st and reverse brake
Leakage from "R" range fluid pressure
circuit
Correction / Reference Item
Inspect. If NG, replace.
Inspect. If NG, replace valve body assembly.
Replace valve body assembly.
Replace.
Inspect. If NG, replace.
Inspect. If NG, replace.
Inspect. If NG, replace.
Overhaul or replace valve body assembly.
Inspect. If NG, replace.
Inspect. If NG, replace valve body assembly.
Replace valve body assembly.
Replace.
Inspect. If NG, replace.
Inspect. If NG, replace.
Inspect. If NG, replace.
Overhaul or replace valve body assembly.
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