Manual Road Test - Suzuki Grand Vitara XL-7 Service Manual

7B1-26 AUTOMATIC TRANSMISSION (4 A / T)
TROUBLESHOOTING
Condition
Selected gear is not correct

MANUAL ROAD TEST

This test check the gear being used in "L", "2" or "D" range when
driven with unoperated gear shift control system. Test drive vehicle
on a level road.
NOTE:
Before this test, check diagnostic trouble code (DTC).
1) Disconnect shift solenoid connector (1) on transmission.
WARNING:
To avoid the danger of being burned, do not touch the hot
exhaust system when disconnecting shift solenoid cou-
pler (1).
2) With select lever in "P", start engine and warm it up.
3) With select lever in "L" range, start vehicle and accelerate to
20 km / h (12.5 mile / h). Check in this state that 1st gear is be-
ing used.
4) At 20 km/h (12.5 mile/h), shift select lever to "2" range and ac-
celerate to 40 km/h (25 mile/h). Check in this state that 3rd gear
is being used.
5) At 40 km/h (25 mile/h), shift select lever to "D" range and check
that O/D gear is used when speed is higher than 40 km/h
(25 mile/h).
6) After above checks, stop vehicle then engine, and connect shift
solenoids coupler (1) with ignition switch OFF.
WARNING:
To avoid the danger of being burned, do not touch the hot
exhaust system when connecting shift solenoid coupler
(1).
7) Clear DTC with scan tool.
Possible cause
Defective valve body component
Defective clutch or brake
Correction
Replace valve body assembly.
Inspect clutch and brake. If any
parts are faulty, replace them.