Suzuki Grand Vitara JB416 / JB420 / JB419. Service manual - part 531

 

  Index      Suzuki     Suzuki Grand Vitara JB416 / JB420 / JB419 - service and repair manual 2007 year

 

Search            copyright infringement  

 

 

 

 

 

 

 

  

 

Content   ..  529  530  531  532   ..

 

 

Suzuki Grand Vitara JB416 / JB420 / JB419. Service manual - part 531

 

 

10B-25 Body Electrical Control System: 

DTC Troubleshooting

Step

Action

Yes

No

1

Control module connector check
1) Check connection of connectors of all control modules 

communicating by means of CAN and reconnect 
securely.

2) Recheck DTC and reconnect securely.

Is DTC U1073 detected?

Go to Step 2.

Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.

2

CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules 

communicating by means of CAN.

3) Check CAN communication circuit between control 

modules for open, short and high resistance.

Is each CAN communication circuit in good condition?

Go to Step 3.

Repair circuit.

3

DTC check of BCM
1) Turn ignition switch to OFF position.
2) Connect connectors of disconnected control modules 

communicating by means of CAN.

3) Disconnect connector from any one of control modules 

other than BCM.

4) Recheck DTC for BCM.

Is DTC U1073 detected?

Disconnect connectors 
of control modules other 
than the one whose 
connector is 
disconnected in Step 3) 
one by one and check 
that DTC U1073 is 
detected by BCM each 
time connector is 
disconnected. When 
DTC U1073 is not 
detected by BCM while 
checking in this way, go 
to description under 
“NO” below. If DTC 
U1073 is detected by 
BCM even when 
connectors of all control 
modules that use CAN 
communication with 
BCM are disconnected, 
substitute a known-
good BCM and recheck.

Check power and 
ground circuit of control 
module disconnect in 
Step 3). If circuit is OK, 
substitute a known-
good control module 
disconnected in Step 3) 
and recheck.

Body Electrical Control System:  10B-26

DTC U1100 (No. 1100): Lost Communication with ECM (Petrol Engine Model)

S6JB0AA204014

Wiring Diagram
Refer to “DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module”.

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.

DTC Troubleshooting

DTC detecting condition

Trouble area

BCM can not receive CAN data from ECM for 
longer than specified time continuously.

• CAN communication circuit
• BCM 
• ECM

Step

Action

Yes

No

1

DTC check of BCM

Is DTC U1100 (No. 1100) and DTC U1073 (No. 1073) 
detected together?

Go to “DTC U1073 (No. 
1073): Control Module 
Communication Bus 
Off”.

Go to Step 2.

2

DTC check of ECM
1) Check ECM for DTC.

Is DTC P1674 detected?

Go to “DTC P1674: 
CAN Communication 
(Bus Off Error): For 
Petrol Engine Model in 
Section 1A”.

Go to Step 3.

3

DTC check of ABS or ESP

® control module

1) Check DTC for ABS or ESP

® control module.

Is DTC U1073 detected?

Go to “DTC U1073: 
Control Module 
Communication Bus Off 
(Petrol Engine Model) in 
Section 4E”.

Go to Step 4.

4

Control module connector check
1) Check connection of connectors of all control modules 

communicating by means of CAN.

2) Recheck BCM for DTC.

Is DTC U1100 (No. 1100) detected?

Go to Step 5.

Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.

5

DTC check of ABS or ESP

® control module

1) Check DTC for ABS or ESP

® control module.

Is DTC U1100 detected?

Go to Step 6.

Go to Step 7.

6

CAN communication circuit check
1) Disconnect connectors from ECM and ABS or ESP

® 

control module.

2) Check CAN communication circuit between ECM and 

ABS or ESP

® control module for open, short and high 

resistance.

Is each CAN communication circuit in good condition?

Check ECM power and 
ground circuit. If circuit 
is OK, substitute a 
known-good ECM and 
recheck.

Repair circuit.

10B-27 Body Electrical Control System: 

DTC U1100 (No. 1100): Lost Communication with ECM (Diesel Engine Model)

S6JB0AA204019

Wiring Diagram
Refer to “DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module”.

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.

7

CAN communication circuit check
1) Disconnect connectors from BCM and ABS or ESP

® 

control module.

2) Check CAN communication circuit between BCM and 

ABS or ESP

® control module for open, short and high 

resistance.

Is each CAN communication circuit in good condition?

Go to Step 8.

Repair circuit.

8

CAN communication circuit check
1) Disconnect connectors of all control modules 

communicating by means of CAN.

2) Check CAN communication circuit between control 

modules other than Step 7 for open, short and high 
resistance.

Is each CAN communication circuit in good condition?

Go to Step 9.

Repair circuit.

9

DTC check of BCM
1) Connect connectors of disconnected control modules 

communicating by means of CAN.

2) Disconnect connector of any one of control module other 

than BCM.

3) Recheck BCM for DTC.

Is DTC U1100 (No.1100) detected?

Disconnect connectors 
of control modules other 
than the one whose 
connector is 
disconnected in Step 2) 
one by one and check 
that DTC U1100 is 
detected by BCM each 
time connector is 
disconnected. When 
DTC U1100 is not 
detected by BCM while 
checking in this way, go 
to description under 
“NO” below. If DTC 
U1100 is detected by 
BCM even when 
connectors of all control 
modules that use CAN 
communication with 
BCM are disconnected, 
substitute a known-
good BCM and recheck.

Check power and 
ground circuit of control 
module disconnected in 
Step 2). If circuit is OK, 
substitute a known-
good control module 
disconnected in Step 2) 
and recheck.

Step

Action

Yes

No

DTC detecting condition

Trouble area

BCM can not receive CAN data from ECM for 
longer than specified time continuously.

• CAN communication circuit
• BCM 
• ECM

Body Electrical Control System:  10B-28

DTC Troubleshooting

Step

Action

Yes

No

1

DTC check of BCM

Is DTC U1100 (No. 1100) and DTC U1073 (No. 1073) 
detected together?

Go to “DTC U1073 (No. 
1073): Control Module 
Communication Bus 
Off”.

Go to Step 2.

2

DTC check of ABS or ESP

® control module

Is DTC U1073 detected?

Go to “DTC U1073: 
Control Module 
Communication Bus Off 
(Diesel Engine Model) 
in Section 4E”.

Go to Step 3.

3

Control module connector check
1) Check connection of connectors of all control modules 

communicating by means of CAN.

2) Recheck BCM for DTC.

Is DTC U1100 (No. 1100) detected?

Go to Step 4.

Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.

4

DTC check of ABS or ESP

® control module

1) Check DTC for ABS or ESP

® control module.

Is DTC U1100 detected?

Go to Step 5.

Go to Step 6.

5

CAN communication circuit check
1) Disconnect connectors from ECM and ABS or ESP

® 

control module.

2) Check CAN communication circuit between ECM and 

ABS or ESP

® control module for open, short and high 

resistance.

Is each CAN communication circuit in good condition?

Check ECM power and 
ground circuit. If circuit 
is OK, substitute a 
known-good ECM and 
recheck.

Repair circuit.

6

CAN communication circuit check
1) Disconnect connectors from BCM and ABS or ESP

® 

control module.

2) Check CAN communication circuit between BCM and 

ABS or ESP

® control module for open, short and high 

resistance.

Is each CAN communication circuit in good condition?

Go to Step 7.

Repair circuit.

7

CAN communication circuit check
1) Disconnect connectors of all control modules 

communicating by means of CAN.

2) Check CAN communication circuit between control 

modules other than Step 6 for open, short and high 
resistance.

Is each CAN communication circuit in good condition?

Go to Step 8.

Repair circuit.

 

 

 

 

 

 

 

Content   ..  529  530  531  532   ..