Road Test - Suzuki GRAND VITARA XL-7 Owner's Manual

7B1-40 AUTOMATIC TRANSMISSION (4 A/T)
TROUBLESHOOTING
Condition
Line pressure higher than standard level in each
range
Line pressure lower than standard level in each
range
Line pressure lower than standard level only in
"D" range
Line pressure lower than standard level only in
"R" range

Road Test

This test is to check if upshift and downshift take place at specified speed while actually driving vehicle on a
level road.
WARNING:
• Carry out test in very little traffic area to prevent an accident.
• Test requires 2 persons, a driver and a tester.
1) Warm up engine.
2) With engine running at idle, shift select lever "D".
3) Accelerate vehicle speed by depressing accelerator pedal gradually.
4) While driving in "D" range, check if gear shift occurs properly as shown in "GEAR SHIFT DIAGRAM" in this
section.
TROUBLESHOOTING
When 1 → 2 upshift fails to occur
When 2 → 3 upshift fails to occur
When 3 → O/D upshift fails to occur
When gear shift point is incorrect
Condition
Possible cause
• Malfunctioning regulator valve
• Malfunctioning throttle valve
• Maladjusted A/T throttle cable
• Defective O/D clutch
• Defective oil pump
• Malfunctioning throttle valve
• Malfunctioning regulator value
• Maladjusted A/T throttle cable
• Fluid leakage from forward clutch
• Defective O/D clutch
• Leakage from "D" range fluid pressure circuit
• Fluid leakage from direct clutch
• Defective O/D clutch
• Fluid leakage from reverse brake
• Fluid leakage from "R" range fluid circuit
1–2 shift valve stuck
2–3 shift valve stuck
3–4 shift valve stuck
• Maladjusted throttle cable
• Defective shift solenoid valve -A or -B
• 1–2, 2–3 or 3–4 shift valve not operating properly
Possible cause