Suzuki Grand Vitara JB416 / JB420. Manual - part 231

5A-58 Automatic Transmission/Transaxle: 

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Keep engine running at idle speed for 30 seconds or more.
5) Check DTC, pending DTC and freeze-frame data.

DTC Troubleshooting

DTC P0963: Pressure Control Solenoid “A” Control Circuit High

S5JB0A5104040

Wiring Diagram
Refer to “DTC P0962: Pressure Control Solenoid “A” Control Circuit Low”.

DTC Detecting Condition and Trouble Area

DTC Detecting Condition

Trouble Area

Pressure control solenoid valve output voltage is too low 
comparing with TCM command value.
(1 driving cycle detection logic)

• Pressure control solenoid valve circuit open or 

shorted to ground.

• Malfunction of pressure control solenoid valve.
• TCM

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System 
Check”.

2

Check pressure control solenoid valve circuit for 
ground short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminals “E92-

2” and “E92-4”.

3) If connection is OK, check continuity between terminal 

“E92-4” of disconnected harness side TCM connector 
and ground.

Is continuity indicated?

Pressure control 
solenoid valve circuit is 
shorted to ground. If 
circuit is OK, go to 
Step4.

Go to Step 4.

3

Check pressure control solenoid valve circuit for open
1) Check resistance between terminals “E92-2” and “E92-

4” of disconnected harness side TCM connector.

Is it infinity?

Pressure control 
solenoid valve circuit is 
open circuit. If circuit is 
OK, go to Step4.

Go to Step 4.

4

Inspection pressure control solenoid valve
1) Inspection pressure control solenoid valve referring to 

“Solenoid Valves (Shift Solenoid-A, Shift Solenoid-B, 
TCC Pressure Control Solenoid and Pressure Control 
Solenoid Inspection”.

Is check results satisfactory?

Intermittent trouble or 
faulty TCM. Check for 
intermittent trouble 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”. If OK, substitute a 
known-good TCM and 
recheck.

Replace defective 
pressure control 
solenoid valve referring 
to “Solenoid Valves 
(Shift Solenoid-A, Shift 
Solenoid-B, TCC 
Pressure Control 
Solenoid and Pressure 
Control Solenoid 
Removal and 
Installation”.

DTC Detecting Condition

Trouble Area

Pressure control solenoid valve output voltage is too high 
comparing with TCM command value.
(1 driving cycle detection logic)

• Pressure control solenoid valve circuit shorted 

to power circuit.

• Pressure control solenoid valve malfunction.
• TCM

Automatic Transmission/Transaxle:  5A-59

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Keep engine running at idle speed for 10 seconds or more.
5) Check DTC, pending DTC and freeze-frame data.

DTC Troubleshooting

DTC P0973 / P0976: Shift Solenoid “A” Control Circuit Low / Shift Solenoid “B” Control Circuit Low

S5JB0A5104041

Wiring Diagram

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System 
Check”.

2

Check pressure control solenoid valve circuit for power 
supply short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminal “E92-2” 

and “E92-4”.

3) If connection is OK, turn ignition switch ON and measure 

voltage between terminal “E92-2” of disconnected 
harness side TCM connector and ground.

Is it 0 – 2 V?

Go to Step 3.

Pressure control 
solenoid valve circuit is 
shorted to power circuit.

3

Inspection pressure control solenoid valve
1) Inspection pressure control solenoid valve referring to 

“Solenoid Valves (Shift Solenoid-A, Shift Solenoid-B, 
TCC Pressure Control Solenoid and Pressure Control 
Solenoid Inspection”.

Is check results satisfactory?

Intermittent trouble or 
faulty TCM. Check for 
intermittent trouble 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”. If OK, substitute a 
known-good TCM and 
recheck.

Replace defective 
pressure control 
solenoid valve referring 
to “Solenoid Valves 
(Shift Solenoid-A, Shift 
Solenoid-B, TCC 
Pressure Control 
Solenoid and Pressure 
Control Solenoid 
Removal and 
Installation”.

GRN

GRN/RED

3

1

2

12V

12V

E92-16

E92-15

6

5

16 15 14 13 12 11

4 3

24 23

21

22

10 9

8

7

2

1

19

20

18 17

E92

17 16

26 25

15 14

6

5

3

4

2

13 12

23 22

24

11 10 9

21 20 19

8 7

18

1

E93

4

I5JB0A510025-01

1. Shift solenoid valve–A

3. TCM

2. Shift solenoid valve–B

4. Terminal arrangement of TCM connector (viewed from harness side)

5A-60 Automatic Transmission/Transaxle: 

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure
DTC P0973:

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Shift select lever to “N” and “D” range for each 20 seconds.
5) Check DTC, pending DTC and freeze-frame data.

DTC P0976:

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Shift select lever to “N” and “D” range for each 10 seconds.
5) Start vehicle and increase vehicle speed to 20 km/h (12.5 mile/h) with throttle position 10% or less.
6) Stop vehicle.
7) Check DTC, pending DTC and freeze-frame data.

DTC Troubleshooting

DTC Detecting Condition

Trouble Area

Voltage of shift solenoid valve TCM terminal is low although TCM 
is commanding shift solenoid to turn ON.
(1 driving cycle detection logic)

• Shift solenoid valve circuit shorted to ground.
• Malfunction of shift solenoid valve.
• TCM

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System 
Check”.

2

Check shift solenoid valve circuit for ground short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminals “E92-

16” (for shift solenoid valve–A), “E92-15” (for shift 
solenoid valve–B).

3) If connection is OK, measure resistance between 

terminal “E92-16” (for shift solenoid valve–A), “E92-15” 
(for shift solenoid valve–B) of disconnected harness side 
TCM connector and ground.

Is it less than 11 

Ω

?

DTC P0973: Shift 
solenoid valve-A circuit 
is shorted to ground.
DTC P0976: Shift 
solenoid valve-B circuit 
is shorted to ground.
If circuit is OK, go to 
Step 3.

Go to Step 3.

3

Inspection solenoid valve
1) Inspection pressure control solenoid valve referring to 

“Solenoid Valves (Shift Solenoid-A, Shift Solenoid-B, 
TCC Pressure Control Solenoid and Pressure Control 
Solenoid Inspection”.

Is check results satisfactory?

Intermittent trouble or 
faulty TCM. Check for 
intermittent trouble 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”, If OK, substitute a 
known-good TCM and 
recheck.

Replace defective 
solenoid valve referring 
to “Solenoid Valves 
(Shift Solenoid-A, Shift 
Solenoid-B, TCC 
Pressure Control 
Solenoid and Pressure 
Control Solenoid 
Removal and 
Installation”.

Automatic Transmission/Transaxle:  5A-61

DTC P0974 / P0977: Shift Solenoid “A” Control Circuit High / Shift Solenoid “B” Control Circuit High

S5JB0A5104042

Wiring Diagram
Refer to “DTC P0973 / P0976: Shift Solenoid “A” Control Circuit Low / Shift Solenoid “B” Control Circuit Low”.

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

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.

 

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine and shift select lever to “D” range.
4) Start vehicle and increase vehicle speed to 60 km/h (37 mile/h) in “D” range.
5) Keep on driving in the speed for 20 seconds and decrease vehicle speed gradually.
6) Stop vehicle.
7) Check DTC, pending DTC and freeze-frame data.

DTC Troubleshooting

DTC Detecting Condition

Trouble Area

Voltage of shift solenoid valve TCM terminal is high although TCM 
is commanding shift solenoid to turn OFF.
(1 driving cycle detection logic)

• Shift solenoid valve circuit open or shorted to 

power circuit.

• Malfunction of shift solenoid valve.
• TCM

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System 
Check”.

2

Check shift solenoid valve circuit for power supply 
short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminal “E92-

16” (for shift solenoid valve–A), “E92-15” (for shift 
solenoid valve–B).

3) If connection is OK, turn ignition switch ON and measure 

voltage between terminal “E92-16” (for shift solenoid 
valve–A), “E92-15” (for shift solenoid valve–B) of 
disconnected harness side TCM connector and ground.

Is it 0 – 2 V?

Go to Step 3.

DTC P0974: Shift 
solenoid valve-A circuit 
is shorted to power 
supply circuit.
DTC P0977: Shift 
solenoid valve-B circuit 
is shorted to power 
supply circuit.

3

Check solenoid valve circuit for open
1) Check continuity between terminal “E92-16” (for 

solenoid valve-A) or “E92-15” (for solenoid valve-B) of 
disconnected harness side TCM connector and ground.

Is it infinity?

• DTC P0974: Solenoid 

valve-A circuit is 
open circuit.

• DTC P0977: Solenoid 

valve-B circuit is 
open circuit.

• If circuit is OK, go to 

step 4.

Go to Step 4.