Suzuki Grand Vitara JB627. Manual - part 211

5A-28 Automatic Transmission/Transaxle: 

Visual Inspection

S6JB0B5104008

Visually check the following parts and systems.

A/T Basic Check

S6JB0B5104009

This check is important for troubleshooting when TCM has detected no DTC and no abnormality has been noted in 
visual inspection. Follow the flow table carefully.

Inspection Item

Referring

A/T fluid

Level, leakage, color

“A/T Fluid Level Check”

A/T fluid hoses

Disconnection, looseness, 
deterioration

“Oil Cooler Hoses Replacement”

A/T select cable

Installation, operation

“Select Cable Adjustment”

Engine oil

Level, leakage

“Engine Oil and Filter Change in Section 0B”

Engine coolant

Level, leakage

“Engine Coolant Change in Section 0B”

Battery

Fluid level, corrosion of terminal

Connectors of electric wire harness Disconnection friction

“Intermittent and Poor Connection Inspection in 
Section 00”

Fuses

Burning

“Cautions in Body Electrical System Servicing in 
Section 9A”

Parts

Installation, damage

Bolt

Looseness

Malfunction indicator lamp

Operation at engine start

“Malfunction Indicator Lamp (MIL) Check in 
Section 1A”

Charge warning light

Operation at engine start

“Generator Symptom Diagnosis in Section 1J”

Engine oil pressure warning light

Operation at engine start

“Oil Pressure Switch Inspection in Section 9C”

Engine coolant temp. meter

Operation at engine start

Other parts that can be checked visually

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System 
Check”.

2

Perform “Road Test”

Is it OK?

Go to Step 3.

Proceed to 
“Troubleshooting” in 
“Road Test”.

3

Perform “Manual Road Test”

Is it OK?

Go to Step 4.

Proceed to 
“Troubleshooting” in 
“Manual Road Test”.

4

Perform “Engine Brake Test”

Is it OK?

Go to Step 5.

Proceed to 
“Troubleshooting” in 
“Engine Brake Test”.

5

Perform “Stall Test”

Is it OK?

Go to Step 6.

Proceed to 
“Troubleshooting” in 
“Stall Test”.

6

Perform “Time Lag Test”

Is it OK?

Go to Step 7.

Proceed to 
“Troubleshooting” in 
“Time Lag Test”.

7

Perform “Line Pressure Test”

Is it OK?

Go to Step 8.

Proceed to 
“Troubleshooting” in 
“Line Pressure Test”.

8

1) Proceed to “Trouble Diagnosis 1” in “A/T Symptom 

Diagnosis”.

Is trouble identified?

Repair or replace faulty 
parts.

Go to Step 9.

9

1) Proceed to “Trouble Diagnosis 2” in “A/T Symptom 

Diagnosis”.

Is trouble identified?

Repair or replace faulty 
parts.

Proceed to “Trouble 
Diagnosis 3” in “A/T 
Symptom Diagnosis”.

Automatic Transmission/Transaxle:  5A-29

Road Test

S6JB0B5104010

This test is to check if upshift, downshift and lock-up take place at specified speeds 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 “D”.
3) Accelerate vehicle speed by depressing accelerator pedal gradually.
4) While driving in “D” range, check if gear shift and lock-up occur properly as shown in “Automatic Gear Shift Table”.

Troubleshooting

Condition

Possible cause

Correction / Reference Item

Unable to run in all range Faulty oil pump

Inspect. If NG, replace.

Seized or broken planetary gear

Inspect. If NG, replace.

Faulty torque converter

Inspect. If NG, replace.

Damaged drive plate

Inspect. If NG, replace.

Faulty valve body component

Replace valve body assembly.

Unable to run in reverse 
position

Faulty reverse clutch

Inspect. If NG, replace.

Faulty 1st & reverse brake

Inspect. If NG, replace.

1 

→

 2 upshift fails to 

occur

Malfunction of transmission range 
sensor

Inspect. If NG, replace.

Maladjust shift control cable

Adjust.

Faulty valve body component

Replace valve body component.

Faulty 2nd brake

Inspect. If NG, replace.

Faulty one-way No.1 clutch

Inspect. If NG, replace.

Faulty one-way No.2 clutch

Inspect. If NG. replace.

2 

→

 3 upshift fails to 

occur

Malfunction of transmission range 
sensor

Inspect. If NG, replace.

Faulty valve body component

Replace valve body component.

Faulty reverse clutch

Inspect. If NG, replace.

3 

→

 4 upshift fails to 

occur

Malfunction of transmission range 
sensor

Inspect. If NG, replace.

Faulty valve body component

Replace valve body component.

Faulty direct clutch

Inspect. If NG, replace.

4 

→

 5 upshift fails to 

occur

Malfunction of transmission range 
sensor

Inspect. If NG, replace.

Malfunction of input shaft speed sensor Inspect. If NG, replace.
Faulty valve body component

Replace valve body component.

Faulty forward clutch

Inspect. If NG, replace.

Faulty No.1 brake

Inspect. If NG, replace.

Incorrect gear shift point Malfunction of throttle position sensor

Inspect. If NG, replace.

Malfunction of input shaft speed sensor Inspect. If NG, replace.
Malfunction of output shaft speed 
sensor

Inspect. If NG, replace.

Malfunction of power mode switch

Inspect, If NG, replace.

Malfunction of transmission fluid 
temperature sensor A

Inspect. If NG, replace.

TCC (lock-up) function 
does not operate

Malfunction of engine coolant 
temperature (ECT) sensor

Inspect. If NG, replace.

Malfunction of brake light switch

Inspect. If NG, replace.

Malfunction of throttle position sensor

Inspect. If NG, replace.

Faulty valve body component

Replace valve body component.

Faulty torque converter

Replace torque converter.

5A-30 Automatic Transmission/Transaxle: 

Manual Road Test

S6JB0B5104011

WARNING

!

 

• Carry out test in very little traffic area to prevent an accident.
• Test requires 2 persons, a driver and a tester.

 

The purpose of this test is to judge whether causal factor of trouble which occurred in automatic transaxle is electrical 
or mechanical by disconnecting transmission wire connector (1) and fixing automatic transaxle gear position (fail-safe 
function).

1) Start engine and warm it up to normal operating temperature.
2) After warming up engine, turn ignition switch to OFF position and disconnect transmission wire connector (1).

3) Turn transfer switch (1) to 4H position (2) (motor-shift type).

4) Turn OFF all electrical loads.

With shift select lever shifted to each range (“L”, “3” and “D”) drive vehicle at 1,000 rpm engine speed and then 
check vehicle speed by referring to “Fixed gear position”.
If vehicle speed is not as specified in “Fixed gear position” table, go to troubleshooting.

5) Connect transmission wire connector and clear DTC.

Fixed gear position

Troubleshooting

1

I6JB0B510014-01

2

1

I6JB0B510015-01

Selector lever position

Gear position

Vehicle speed

L range

3rd gear

Approx. 22 km/h (14 mile/h)

3 range

3rd gear

Approx. 22 km/h (14 mile/h)

D range

4th gear

Approx. 31 km/h (19 mile/h)

Condition

Possible cause

Correction / Reference Item

Selected gear is incorrect Faulty valve body component

Replace valve body assembly.

Faulty clutch or brake

Inspect clutch and brake. If any parts are faulty, 
replace them.

Automatic Transmission/Transaxle:  5A-31

Stall Test

S6JB0B5104012

This test is to check overall performance of automatic transmission and engine by measuring stall speed at “D” and 
“R” ranges. Be sure to perform this test only when transmission fluid is at normal operating temperature and its level is 
between FULL and LOW marks.

CAUTION

!

 

• Do not run engine at stall more than 5 seconds continuously, for fluid temperature may rise 

excessively high.

• After performing stall test, be sure to leave engine running at idle for longer than 1 minute before 

another stall test.

• Do not perform stall test at transfer position in 4L.

 

1) Apply parking brake and block wheels.
2) Install tachometer.
3) Start engine with select lever shifted to “P”.
4) Depress brake pedal fully.
5) Shift select lever to “D” and depress accelerator pedal fully while watching tachometer. Read engine rpm quickly 

when it has become constant (stall speed).

6) Release accelerator pedal immediately after stall speed is checked.
7) In the same way, check stall speed in “R” range.
8) Stall speed should be within following specification.

Engine stall speed 
Standard: 2,320 – 2,620 rpm

Troubleshooting

Condition

Possible cause

Correction / Reference Item

Lower than standard level 
in both “D” and “R” range

Engine output torque failure

Inspect and repair engine.

Faulty one-way clutch of torque 
converter

Replace torque converter.

Higher than standard 
level in “D” range

Malfunction of pressure control solenoid 
valve (Low line pressure)

Inspect. If NG, replace valve body assembly.

Malfunction of primary regulator valve 
(Low line pressure)

Replace valve body assembly.

Slippery forward clutch

Inspect. If NG, replace.

Faulty one-way No.3 clutch

Inspect. If NG, replace.

Leakage from “D” range fluid pressure 
circuit

Overhaul or replace valve body assembly.

Higher than standard 
level in “R” range

Malfunction of pressure control solenoid 
valve (Low line pressure)

Inspect. If NG, replace valve body assembly.

Malfunction of primary regulator valve 
(Low line pressure)

Replace valve body assembly.

Slippery reverse clutch

Inspect. If NG, replace.

Slippery 1st and reverse brake

Inspect. If NG, replace.

Faulty one-way No.1 clutch

Inspect. If NG, replace.

Leakage from “R” range fluid pressure 
circuit

Overhaul or replace valve body assembly.

Higher than standard 
level in both “D” and “R” 
range

Malfunction of pressure control solenoid 
valve (Low line pressure)

Inspect. If NG, replace valve body assembly.

Malfunction of primary regulator valve 
(Low line pressure)

Replace valve body assembly.

Clogged oil strainer

Replace.

Faulty oil pump

Inspect. If NG, replace.

Leakage from both “D” and “R” range 
fluid pressure circuit

Overhaul or replace valve body assembly.