Suzuki Grand Vitara JB416 / JB420. Manual — part 222

5A-22 Automatic Transmission/Transaxle:

NOTE
*1: MIL does not light although DTC is detected and stored.
*2: Transmission warning light does not light although DTC is detected and stored.

DTC Check

S5JB0A5104006

NOTE
For vehicle without engine diagnosis
connector, the MIL is turned on when the
ECM and/or TCM detect malfunction(s). Each
ECU stores diagnostic information as the
diagnostic trouble code (DTC) in its memory
and outputs the DTC to the scan tool.
Therefore, check both of the ECUs for any
DTC with the scan tool because the DTC
stored in ECU and TCM is not read and
displayed at a time. However, each of the
ECUs needs not to be checked with the
generic scan tool because the DTC stored in
ECM and TCM is read and displayed at a time.

Automatic transmission DTC can be checked using any
one of the following 2 methods.

Reading DTC Using SUZUKI Scan Tool

1) Turn ignition switch OFF.
2) Connect SUZUKI scan tool to data link connector

(DLC).

Special tool
(A): SUZUKI scan tool

)

P0976

Shift Solenoid “B” Control Circuit
Low

Voltage of shift solenoid terminal is low although
TCM is commanding shift solenoid to turn ON.

1driving

cycle

1driving

cycle

)

P0977

Shift Solenoid “B” Control Circuit
High

Voltage of shift solenoid terminal is high although
TCM is commanding shift solenoid to turn OFF.

1driving

cycle

1driving

cycle

)

P1702

Internal Control Module Memory
Check Sum Error

Calculation of current data stored in TCM is not
correct comparing with pre-stored checking data
in TCM.

1driving

cycle

1driving

cycle

)

P1703 CAN Invalid Data- TCM

TCM receives malfunction signal of throttle
position, engine coolant temperature, engine
revolution and engine torque from ECM.

1driving
cycle *1

1driving
cycle *2

)

P1723 Range Select Switch Malfunction

3 position switch signal is inputted out of specified
value.

1driving
cycle *1

1driving
cycle *2

)

P1774

Control Module Communication
Bus OFF

Transmitting error detected to TCM for specified
time continuously.

1driving

cycle

1driving

cycle

)

P1777

TCM Lost Communication with
ECM (Reception Error)

Receiving error from ECM detected to TCM for
specified time continuously.

1driving

cycle

1driving

cycle

)

P1778

TCM Lost Communication with
BCM (Reception Error)

Receiving error from BCM detected to TCM for
specified time continuously.

1driving
cycle *1

1driving
cycle *2

)

P1874

4L switch circuit malfunction
(Short)

Actual transfer position is 4H although transfer
low signal is inputted.

1driving

cycle

1driving
cycle *2

)

P1875

4L switch circuit malfunction
(Open)

Actual transfer position is 4L or N although
transfer low signal is not inputted.

1driving

cycle

1driving
cycle *2

)

P1878

Torque Converter Clutch
Shudder

Variation in the output revolution speed of the
specified amplitude and specified cycle is
detected under slip lock-up condition.

20driving

cycle *1

—

)

P2763

Torque Converter Clutch Circuit
High

Too much electric flow is detected on TCC
pressure control solenoid circuit.

1driving

cycle

1driving

cycle

)

P2764

Torque Converter Clutch Circuit
Low

No electric flow is detected on TCC pressure
control solenoid circuit.

1driving

cycle

1driving

cycle

DTC No.

Detecting item

Detecting condition (DTC will set when

detecting)

(A)

I5JB0A510016-01

Automatic Transmission/Transaxle: 5A-23

3) Read DTC according to instructions displayed on

SUZUKI scan tool and write it down. Refer to
SUZUKI scan tool operator’s manual for further
details.

4) After completing the check, turn ignition switch OFF

and disconnect SUZUKI scan tool from data link
connector (DLC).

Reading DTC Using Monitor Connector (If Equipped)

1) Turn ignition switch OFF.
2) Remove steering column hole cover (1).
3) Using service wire, connect diagnosis switch

terminal (3) of monitor connector (2) to body ground.

4) With ignition switch ON position and leaving engine

OFF, read DTC displayed on digital display odometer
(1) referring to “DTC Table”.

5) After completing the check, turn ignition switch OFF

and disconnect service wire from monitor connector.

DTC Clearance

S5JB0A5104007

Automatic transmission DTC can be cleared using any
one of the following 2 methods.

NOTE
DTC and freeze frame data stored in TCM
memory are also cleared in following cases.
Be careful not to clear them before keeping
their record.
• When power to TCM is cut off (by

disconnecting battery cable, removing
fuse or disconnecting TCM connector).

• When the same malfunction (DTC) is not

detected again during 40 engine warm-up
cycles.

DTC Clearance Using SUZUKI Scan Tool

1) Turn ignition switch OFF.
2) Connect SUZUKI scan tool to data link connector

(DLC) (1).

Special tool
(A): SUZUKI scan tool

3) Clear DTC according to instructions displayed on

SUZUKI scan tool. Refer to SUZUKI scan tool
operator’s manual for further details.

4) After completing the clearance, turn ignition switch

OFF and disconnected SUZUKI scan tool from data
link connector (DLC).

I5JB0A510017-01

I5JB0A510018-01

(A)

I5JB0A510016-01

5A-24 Automatic Transmission/Transaxle:

DTC Clearance Using Monitor Connector (If
Equipped)

1) Remove steering column hole cover (1).
2) Turn ignition switch ON.
3) After 6 seconds or more, repeat connecting and

disconnecting diagnosis switch terminal (3) of
monitor connector (2) and body ground 5 times at
about 1 second interval within 10 seconds, using
service wire.

4) Check TCM that no malfunction DTC remains in

memory of it.

Fail Safe Table

S5JB0A5104008

This function is provided by the safe mechanism that assures safe driveability even when the solenoid valve, sensor or
its circuit fails. The following table shows the fail safe function for each fail condition of sensor, solenoid, TCM or its
circuit.

I5JB0A510017-01

DTC No.

Trouble Area

Fail Safe Operation

)

P0705

Transmission Range Sensor Circuit
Malfunction (PRNDL Input)

• TCM control is performed in priority order below.

3> D> 2> L> R> N> P

• Slip controlled lock-up function is inhibited to operate.
• Reverse control is inhibited.
• Cruise control function is inhibited to operate.
• Power mode is inhibited.

)

P0707

Transmission Range Sensor Circuit
Low

• Range is assumed to be “D” range.
• Slip controlled lock-up function is inhibited to operate.
• Reverse control is inhibited.
• Cruise control function is inhibited to operate.
• Power mode is inhibited.

)

P0712

Transmission Fluid Temperature
Sensor “A” Circuit Low

• A/T fluid temperature is assumed to be 80

°C (176 °F).

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.

)

P0713

Transmission Fluid Temperature
Sensor “A” Circuit High

)

P0717

Input / Turbine Speed Sensor Circuit
No Signal

• Torque reducing request to ECM (torque reduction control) is

inhibited.

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.

)

P0722

Output Speed Sensor Circuit No
Signal

• Vehicle speed which is calculated by input shaft speed sensor

signal is used for gear shifting control instead of vehicle speed
calculated by output shaft speed sensor (VSS) signal.

• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Torque reducing request to ECM (torque reduction control) is

inhibited.

• Line pressure control at gear shifting is inhibited.

)

P0742

Torque Converter Clutch Circuit Stuck
On

When vehicle speed is less than 10 km/h (6 mile/h), gear position is
fixed in 1st gear for prevention of engine stall.

)

P0752 Shift Solenoid “A” Stuck On

Upshifting to 4th gear is inhibited.

Automatic Transmission/Transaxle: 5A-25

)

P0962

Pressure Control Solenoid “A” Control
Circuit Low

• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown

in the following.
R: Reverse
D: 4th
3: 4th
2: 3rd
L: 1st

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.

)

P0963

Pressure Control Solenoid “A” Control
Circuit High

)

P0973 Shift Solenoid “A” Control Circuit Low

)

P0974 Shift Solenoid “A” Control Circuit High

)

P0976 Shift Solenoid “B” Control Circuit Low

)

P0977

Shift Solenoid “B” Control Circuit High

)

P1702

Internal Control Module Memory
Check Sum Error

• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown

in the following.
R: Reverse
D: 4th
3: 4th
2: 3rd
L: 1st

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.

)

P1703

CAN Invalid Data- TCM

In case of throttle position signal malfunction:
• Throttle opening used for line pressure control is assumed to be

100%.

• Throttle opening used for gear shifting control is assumed to be

0%.

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
In case of engine coolant temperature signal malfunction:
• Engine coolant temperature is assumed to be 80

°C (176 °F).

• Slip controlled lock-up function is inhibited to operate.
In case of engine revolution signal malfunction:
• Engine revolution is assumed to be maximum revolution.
• Lock-up function is inhibited to operate.
In case of engine torque signal malfunction:
• Slip controlled lock-up function is inhibited to operate.
• Engine torque is assumed to be maximum torque.
In case of vehicle speed signal:
• Cruise control function is inhibited to operate.

)

P1774 CAN communication problem-TCM

• Throttle opening used for line pressure control is assumed to be

100%.

• Throttle opening used for gear shifting control is assumed to be

0%.

• Engine revolution is assumed to be maximum revolution.
• Engine torque is assumed to be maximum torque.
• Engine coolant temperature is assumed to be 80

°C (176 °F).

• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is

inhibited.

• Line pressure is outputted maximum value.
• Power mode is inhibited. (P1774 only)

)

P1777

TCM Lost Communication with ECM
(Reception Error)

)

P1778

TCM Lost Communication with BCM
(Reception Error)

Power mode is inhibited.

DTC No.

Trouble Area

Fail Safe Operation