Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 313

5A-43 Automatic Transmission/Transaxle:

Poor 3

→

2 shift

Malfunction of shift solenoid valve No.1 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor

Inspect. If NG, replace.

Malfunction of accelerator pedal position
sensor

Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.

Faulty valve body component

Replace valve body assembly.

Poor 2

→

1 shift

Malfunction of shift solenoid valve No.2 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor

Inspect. If NG, replace.

Malfunction of accelerator pedal position
sensor

Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.

Faulty valve body component

Replace valve body assembly.

Incorrect shift point

Engine abnormal condition

Inspect and repair engine

Malfunction of output shaft speed
sensor

Inspect. If NG, replace.

Malfunction of accelerator pedal position
sensor

Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.

Condition

Possible cause

Correction / Reference Item

Automatic Transmission/Transaxle: 5A-44

Non operate TCC / lock-up
system

Malfunction of lock-up solenoid valve

Inspect. If NG, replace.

Malfunction of shaft solenoid valve No.1
and/or No.2

Inspect. If NG, replace.

Malfunction of output shaft speed
sensor

Inspect. If NG, replace.

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

Inspect. If NG, replace.

Malfunction of transmission fluid
temperature sensor

Inspect. If NG, replace.

Malfunction of pressure control solenoid
valve

Inspect. If NG, replace valve body assembly.

Malfunction of brake light switch

Inspect referring to “Brake Light Switch
Inspection in Section 9B”. If NG, replace.

Malfunction of accelerator pedal position
sensor

Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.

Faulty valve body component

Replace valve body assembly.

Excessive “N”

→

“D” or

“N”

→

“R” time lag

Pressure control solenoid valve circuit
faulty

Inspect. If NG, replace valve body assembly.

Clogged oil strainer

Replace.

Faulty valve body component

Replace valve body assembly.

Condition

Possible cause

Correction / Reference Item

5A-45 Automatic Transmission/Transaxle:

Trouble Diagnosis 3
Off-vehicle repair

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.

Fluid pressure leakage to overdrive
clutch due to wear of oil pump bushing

Inspect. If NG, replace.

Damaged drive plate

Inspect. If NG, replace.

Faulty torque converter

Replace.

Excessive “N”

→

“D” shift

shock

Faulty forward clutch

Inspect. If NG, replace.

Excessive “N”

→

“R” shift

shock

Faulty reverse brake

Inspect. If NG, replace.

Faulty direct clutch

Inspect. If NG, replace.

Poor 1

→

2 shift,

excessive shock or
slippage

Faulty second brake

Inspect. If NG, replace.

Faulty one-way clutch No.1

Inspect. If NG, replace.

Faulty one-way clutch No.2

Inspect. If NG, replace.

Poor 2

→

3 shift,

excessive shock or
slippage

Faulty direct clutch

Inspect. If NG, replace.

Faulty one-way clutch No.1

Inspect. If NG, replace.

Poor 3

↔

O/D shift,

excessive shock or
slippage

Faulty O/D clutch

Inspect. If NG, replace.

Faulty O/D brake

Inspect. If NG, replace.

Poor 3

→

2 shift,

excessive shock or
slippage

Faulty direct clutch

Inspect. If NG, replace.

Faulty one-way clutch No.1

Inspect. If NG, replace.

Poor 2

→

1 shift,

excessive shock or
slippage

Faulty second brake

Inspect. If NG, replace.

Faulty one-way clutch No.1

Inspect. If NG, replace.

Faulty one-way clutch No.2

Inspect. If NG, replace.

Non operate TCC / lock-up
system

Faulty torque converter

Replace.

Excessive “N”

→

“D” time

lag

Faulty oil pump

Inspect. If NG, replace.

Faulty forward clutch

Inspect. If NG, replace.

Leakage from “D” range fluid pressure
circuit

Overhaul or replace valve body assembly.

Excessive “N”

→

“R” time

lag

Faulty oil pump

Inspect. If NG, replace.

Faulty direct clutch

Inspect. If NG, replace.

Faulty reverse brake

Inspect. If NG, replace.

Leakage from “R” range fluid pressure
circuit

Overhaul or replace valve body assembly.

Poor engine brake in
downshift to “2” range

Faulty 2nd coast brake

Inspect. If NG, replace.

Poor engine brake in
downshift to “L” range

Faulty reverse brake

Inspect. If NG, replace.

Automatic Transmission/Transaxle: 5A-46

No Gear Shift to 4th Gear

S6JB0A5104020

System Description
TCM does not shift to 4th gear under any of the following condition.
• “3” position switch signal is inputted.
• 4L/N switch (if equipped) is turned ON. (4L or N mode)
• TCM detects the following DTCs.

DTC, P0722, P0752, P0962, P0963, P0973, P0974, P0976, P0977, P1702

Troubleshooting

WARNING

!

• When performing a road test, select a place where there is no traffic or possibility of a traffic

accident and be very careful during testing to avoid occurrence of an accident.

• Road test should be carried out with 2 persons, a driver and tester, on a level road.

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System
Check”.

2

Check DTC

Is DTC, P0722, P0752, P0962, P0963, P0973, P0974,
P0976, P0977 or P1702 detected?

Perform DTC Flow to
repair and retry.

Go to Step 3.

3

ECT check
1) Warm up engine to normal operating temperature.
2) Check ECT monitored by TCM using scan tool.

Is ECT indicated –40

°

C (–40

°

F)?

Go to Step 4.

Faulty ECT sensor, its
circuit or engine cooling
system. If OK, substitute
a known-good TCM and
recheck.

4

“3” position switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E92-20” of TCM connector and ground under the
following conditions.

“3” position switch specification
Shift selector lever to “P”, “R”, “N” or “D” range: 2.9
– 3.8 V
Shift selector lever to “3”, “2” or “L” range: 1.4 – 2.0
V

Is result as specified?

• For vehicle equipped

with 4L/N switch, go
to Step 5.

• For vehicle equipped

without 4L/N switch,
substitute a known-
good TCM and
recheck.

Faulty “3” position
switch or its circuit. If
OK, substitute a known-
good TCM and recheck.

5

4L/N switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E93-4” of TCM connector and ground.

4L/N switch specification
Transfer gear position “4H”: Battery voltage
Transfer gear position “4L” or “N”: 0 – 2 V

Is result as specified?

Substitute a known-
good TCM and recheck.

Faulty 4L/N switch or its
circuit. If OK, substitute
a known-good TCM and
recheck.