Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 308

5A-23 Automatic Transmission/Transaxle: 

DTC Check

S6JB0A5104006

NOTE
For E-OBD model, 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 SUZUKI 
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.

 

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

(DLC).

Special tool
(A):  SUZUKI scan tool

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).

DTC Clearance

S6JB0A5104007

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.

 

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).

(A)

1

I5JB0A510016-01

(A)

1

I5JB0A510016-01

Automatic Transmission/Transaxle:  5A-24

Fail Safe Table

S6JB0A5104008

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.

DTC 

No.

Trouble Area

Fail Safe Operation

)

P07

05

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. (if equipped with 

cruise control system)

• Power mode is inhibited.

)

P07

07

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. (if equipped with 

cruise control system)

• Power mode is inhibited.

)

P07

12

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.

)

P07

13

Transmission Fluid Temperature Sensor 
“A” Circuit High

)

P07

17

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.

)

P07

22

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.

)

P07

42

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.

)

P07

52

Shift Solenoid “A” Stuck On

Upshifting to 4th gear is inhibited.

)

P09

62

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.

)

P09

63

Pressure Control Solenoid “A” Control 
Circuit High

)

P09

73

Shift Solenoid “A” Control Circuit Low

)

P09

74

Shift Solenoid “A” Control Circuit High

)

P09

76

Shift Solenoid “B” Control Circuit Low

)

P09

77

Shift Solenoid “B” Control Circuit High

5A-25 Automatic Transmission/Transaxle: 

)

P17

02

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.

)

P17

03

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. (if equipped with 

cruise control system)

)

P17

74

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)

)

P17

77

TCM Lost Communication with ECM 
(Reception Error)

)

P17

78

TCM Lost Communication with BCM 
(Reception Error)

Power mode is inhibited. 

)

P18

74

4L switch circuit malfunction (Short)

Slip controlled lock-up function is inhibited to operate. (if equipped 
with 4L/N switch)

)

P18

75

4L switch circuit malfunction (Open)

)

P18

78

Torque Converter Clutch Shudder

Slip controlled lock-up function is inhibited to operate.

)

P27

63

Torque Converter Clutch Circuit High

Power supply for TCC pressure control solenoid is cut.

DTC 

No.

Trouble Area

Fail Safe Operation

Automatic Transmission/Transaxle:  5A-26

Scan Tool Data

S6JB0A5104009

As the data values given in the following table are standard values estimated on the basis of values obtained from the 
normally operating vehicles by using a scan tool, use them as reference value. Even when the vehicle is in good 
condition, there may be cases where the checked value does not fall within each specified data range. Therefore, 
judgment as abnormal should not be made by checking with these data alone.
Also, condition in the following table that can be checked by the scan tool are those detected by TCM and output from 
TCM as commands and there may be cases where the automatic transmission or actuator is not operating (in the 
condition) as indicated by the scan tool.

)

P27

64

Torque Converter Clutch Circuit Low

• Lock-up function is inhibited to operate.
• When vehicle speed is less than 10 km/h (6 mile/h), gear position 

is fixed in 1st gear for prevention of engine stall.

Scan Tool Data

Vehicle Condition

Normal Condition / Reference Values

Gear Position

Ignition switch ON 
POWER mode 
OFF

Select lever is in “P” position

P/N

Select lever is in “R” position

R

Select lever is in “N” position

P/N

Select lever is in “D” position

1st

Select lever is in “3” position

1st

Select lever is in “2” position

1st

Select lever is in “L” position

1st

Throttle Position

Ignition switch ON  Accelerator pedal is depressed

0 – 100% (varies depending on 
depressed value)

Accelerator pedal is released

0 – 5%

Input Shaft Rev

At engine idle speed and selector lever is in 
“P”position

(Engine idle speed is displayed in 
increments of 50 rpm)

At 40 km/h (25 mile/h) constant speed, 20% or less 
throttle opening and 3rd gear (“3” range)

2300 RPM
(displayed in increments of 50 rpm)

At 60 km/h (37.5 mile/h) constant speed, 20% or less 
throttle opening and 4th gear (“D” range)

0 RPM

Output Shaft Rev

At vehicle stop

0 RPM

At 40 km/h (25 mile/h) constant speed, 20% or less 
throttle opening and 3rd gear (“3” range)

2300 RPM
(displayed in increments of 50 rpm)

Vehicle Speed 1

At vehicle stop

0 km/h, 0 MPH

Battery Voltage

Ignition switch ON and engine stop

Battery voltage is displayed (8 – 16 V)

ATF Temp

After driving at 60 km/h (37.5 mile/h) for 15 minutes 
or more, and A/T fluid temperature around sensor 
reaches 70 – 80 

°C (158 – 176 °F)

70 – 80 

°C (158 – 176 °F)

TCC Sol Duty

At vehicle stop, closed throttle and 1st gear

0%

At 80 km/h (50 mile/h) constant speed, 30% or less 
throttle opening and 3th gear. (“3” range)

100%

Press Cont Sol

At vehicle stop, closed throttle, engine idle speed and 
1st gear

9.5%

Slip RPM

Engine running at idle speed and selector lever is in 
“P” range

0 

±25 RPM

Engine running, vehicle stop and selector lever is in 
“D” range

Engine speed is displayed

Vehicle Speed 2

At vehicle stop

0 km/h, 0 MPH

Engine Speed

At engine idle speed

Engine idle speed is displayed

Coolant Temp

Ignition switch ON

Engine coolant temperature is displayed

Target Engine 
Torque

Ignition switch ON

0 N

⋅m

Engine Torque

Ignition switch ON

0 N

⋅m

MIL request (for E-
OBD)

Ignition switch ON

OFF

Malfunction 
Indication On (for 
Non E-OBD)

Ignition switch ON

OFF

DTC 

No.

Trouble Area

Fail Safe Operation