Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 89

1A-303 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0201: Fuel Injector No.1 Circuit

S6JB0A1124097

CAUTION

!

• This fault can result in a rapid and significant fouling of the diesel particulate filter.
• This fault may appear if the wiring harness has been damaged.

Follow the procedure described in “Electrical Circuit Inspection Procedure in Section 00”.

• This test enables the condition and the conformity of the engine wiring harness to be checked.

NOTE

• Cylinder number is counted from flywheel side.
• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after the engine has been started.

• If CC1, CC, or D1 is present, the Red stop warning light (gravity 2 warning light) is lit.
• If CO is present the Injection warning light (gravity 1 warning light) is lit.
• If CO is still present, the Malfunction indicator light (MIL) will come on after three consecutive

driving cycles (starting +5 seconds + turn OFF ignition switch and wait 40 seconds.).

• If the fault is present, the injection on cylinder 1 is disabled.
• Use service wire for all operations on the ECM connectors.

Wiring Diagram
For wiring circuit and connector number, refer to “A-5 Engine and A/C Control System Circuit Diagram (DSL) in
Section 9A”.

Detecting Condition

Troubleshooting

Displaying on SUZUKI scan tool

Detecting condition

CC1

Short circuit to +12 V

CO

Open circuit

CC

Short circuit

D1

Fuel injector control

Check the connections on fuel injector No.1.
Check the ECM connections.
Repair if necessary.
Disconnect fuel injector No.1.
Measure the resistance of fuel injector No.1 between “C04-1” and “C04-2” terminals.Replace the fuel injector if
there is a short circuit (R = 0

Ω) or an open circuit (resistance = infinity).

Otherwise reconnect fuel injector No.1.
Check the following connections for continuity and make sure there is no interference resistance:
• Between “C04-2” wire of fuel injector No.1 connector and “C85-27” terminal of ECM connector
• Between “C04-1” wire of fuel injector No.1 connector and “C85-32” terminal of ECM connector
If the fault is still present: apply Test 8 of Fault Finding-Tests referring to “Test 8: Injector malfunction: For Diesel
Engine Model”.
If the fault is still present, substitute a known-good ECM and recheck.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-304

DTC P0202: Fuel Injector No.2 Circuit

S6JB0A1124098

CAUTION

!

• Cylinder number is counted from flywheel side.
• This fault can result in a rapid and significant fouling of the diesel particulate filter.
• This fault may appear if the wiring harness has been damaged.

Follow the procedure described in “Electrical Circuit Inspection Procedure in Section 00”.

• This test enables the condition and the conformity of the engine wiring harness to be checked.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after the engine has been started.

• If CC1, CC, or D1 is present, the Red stop warning light (gravity 2 warning light) is lit.
• If CO is present the Injection warning light (gravity 1 warning light) is lit.
• If CO is still present, the Malfunction indicator light (MIL) will come on after three consecutive

driving cycles (starting +5 seconds + turn OFF ignition switch and wait 40 seconds.).

• If the fault is present, the injection on cylinder 2 is disabled.
• Use service wire for all operations on the ECM connectors.

Wiring Diagram
For wiring circuit and connector number, refer to “A-5 Engine and A/C Control System Circuit Diagram (DSL) in
Section 9A”.

Detecting Condition

Troubleshooting

Displaying on SUZUKI scan tool

Detecting condition

CC1

Short circuit to +12 V

CO

Open circuit

CC

Short circuit

D1

Fuel injector control

Check the connections on fuel injector No.2.
Check the ECM connections.
Repair if necessary.
Disconnect fuel injector No.2.
Measure the resistance of fuel injector No.2 between “C05-1” and “C05-2” terminals.
Replace the fuel injector if there is a short circuit (R = 0

Ω) or an open circuit (resistance = infinity).

Otherwise reconnect fuel injector No.2.
Check the following connections for continuity and make sure there is no interference resistance:
• Between “C05-2” wire of fuel injector No.2 connector and “C85-25” terminal of ECM connector
• Between “C05-1” wire of fuel injector No.2 connector and “C85-29” terminal of ECM connector
If the fault is still present: apply Test 8 of Fault Finding-Tests referring to “Test 8: Injector malfunction: For Diesel
Engine Model”.
If the fault is still present, substitute a known-good ECM and recheck.

1A-305 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0203: Fuel Injector No.3 Circuit

S6JB0A1124099

CAUTION

!

• Cylinder number is counted from flywheel side.
• This fault can result in a rapid and significant fouling of the diesel particulate filter.
• This fault may appear if the wiring harness has been damaged.Follow the procedure described in

“Electrical Circuit Inspection Procedure in Section 00”.

• This test enables the condition and the conformity of the engine wiring harness to be checked.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after the engine has been started.

• If CC1, CC, or D1 is present, the Red stop warning light (gravity 2 warning light) is lit.
• If CO is present the Injection warning light (gravity 1 warning light) is lit.
• If CO is still present, the Malfunction indicator light (MIL) will come on after three consecutive

driving cycles (starting +5 seconds + turn OFF ignition switch and wait 40 seconds.).

• If the fault is present, the injection on cylinder 3 is disabled.
• Use service wire for all operations on the ECM connectors.

Wiring Diagram
For wiring circuit and connector number, refer to “A-5 Engine and A/C Control System Circuit Diagram (DSL) in
Section 9A”.

Detecting Condition

Troubleshooting

Displaying on SUZUKI scan tool

Detecting condition

CC1

Short circuit to +12 V

CO

Open circuit

CC

Short circuit

D1

Fuel injector control

Check the connections on fuel injector No.3.
Check the ECM connections.
Repair if necessary.
Disconnect fuel injector No.3.
Measure the resistance of fuel injector No.3 between “C06-1” and “C06-2” terminals.
Replace the fuel injector if there is a short circuit (R = 0

Ω) or an open circuit (resistance = infinity).

Otherwise reconnect fuel injector No.3.
Check the following connections for continuity and make sure there is no interference resistance:
• Between “C06-2” wire of fuel injector No.3 connector and “C85-26” terminal of ECM connector
• Between “C06-1” wire of fuel injector No.3 connector and “C85-30” terminal of ECM connector
If the fault is still present: apply Test 8 of Fault Finding-Tests referring to “Test 8: Injector malfunction: For Diesel
Engine Model”.
If the fault is still present, substitute a known-good ECM and recheck.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-306

DTC P0204: Fuel Injector No.4 Circuit

S6JB0A1124100

CAUTION

!

• Cylinder number is counted from flywheel side.
• This fault can result in a rapid and significant fouling of the diesel particulate filter.
• This fault may appear if the wiring harness has been damaged.

Follow the procedure described in “Electrical Circuit Inspection Procedure in Section 00”.

• This test enables the condition and the conformity of the engine wiring harness to be checked.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after the engine has been started.

• If CC1, CC, or D1 is present, the Red stop warning light (gravity 2 warning light) is lit.
• If CO is present the Injection warning light (gravity 1 warning light) is lit.
• If CO is still present, the Malfunction indicator light (MIL) will come on after three consecutive

driving cycles (starting +5 seconds + turn OFF ignition switch and wait 40 seconds.).

• If the fault is present, the injection on cylinder 4 is disabled.
• Use service wire for all operations on the ECM connectors.

Wiring Diagram
For wiring circuit and connector number, refer to “A-5 Engine and A/C Control System Circuit Diagram (DSL) in
Section 9A”.

Detecting Condition

Troubleshooting

Displaying on SUZUKI scan tool

Detecting condition

CC1

Short circuit to +12 V

CO

Open circuit

CC

Short circuit

D1

Fuel injector control

Check the connections on fuel injector No.4.
Check the ECM connections.
Repair if necessary.
Disconnect fuel injector No.4.
Measure the resistance of fuel injector No.4 between “C07-1” and “C07-2” terminals.
Replace the fuel injector if there is a short circuit (R = 0

Ω) or an open circuit (resistance = infinity).

Otherwise reconnect fuel injector No.1.
Check the following connections for continuity and make sure there is no interference resistance:
• Between “C07-2” wire of fuel injector No.4 connector and “C85-28” terminal of ECM connector
• Between “C07-1” wire of fuel injector No.4 connector and “C85-31” terminal of ECM connector
If the fault is still present: apply Test 8 of Fault Finding-Tests referring to “Test 8: Injector malfunction: For Diesel
Engine Model”.
If the fault is still present, substitute a known-good ECM and recheck.