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

B

(A)

1

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).

3

1

2

I5JB0A510017-01

1

I5JB0A510018-01

(A)

1

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.

3

1

2

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