Suzuki GRAND VITARA XL-7 User Manual

7B1-40 AUTOMATIC TRANSMISSION (4 A/T)
TROUBLESHOOTING
Road Test
This test is to check if upshift and downshift take place at specified speed while actually driving vehicle on a
level road.
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
Condition Possible cause
Line pressure higher than standard level in each
range
• Malfunctioning regulator valve
• Malfunctioning throttle valve
• Maladjusted A/T throttle cable
Line pressure lower than standard level in each
range
• Defective O/D clutch
• Defective oil pump
• Malfunctioning throttle valve
• Malfunctioning regulator value
• Maladjusted A/T throttle cable
Line pressure lower than standard level only in
“D” range
• Fluid leakage from forward clutch
• Defective O/D clutch
• Leakage from “D” range fluid pressure circuit
Line pressure lower than standard level only in
“R” range
• Fluid leakage from direct clutch
• Defective O/D clutch
• Fluid leakage from reverse brake
• Fluid leakage from “R” range fluid circuit
WARNING:
• Carry out test in very little traffic area to prevent an accident.
• Test requires 2 persons, a driver and a tester.
Condition Possible cause
When 1 → 2 upshift fails to occur 1–2 shift valve stuck
When 2 → 3 upshift fails to occur 2–3 shift valve stuck
When 3 → O/D upshift fails to occur 3–4 shift valve stuck
When gear shift point is incorrect • Maladjusted throttle cable
• Defective shift solenoid valve -A or -B
• 1–2, 2–3 or 3–4 shift valve not operating properly

Suzuki GRAND VITARA XL-7 Specifications

General

Brand	Suzuki
Model	GRAND VITARA XL-7
Category	Automobile
Language	English