Suzuki Grand Vitara JB419. Manual - part 18

Engine General Information and Diagnosis:  1A-49

DTC P0335: Crankshaft Position Sensor “A” Circuit Malfunction

S5JB0B1104109

NOTE

• Conditions for applying fault finding procedures to stored faults: The fault is declared present:

– When an attempt is made to start the engine.
– The engine must be running.

• Use service wire for all operations on the controller connectors.
• The CKP sensor is consistent with the CMP sensor.
• If the fault is present:

– It is impossible to start the engine or the engine stops.
– The Red stop warning light (gravity 2 warning light) is lit.

 

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

1.DEF

Signal absent

2.DEF

Inconsistency of signal

Check the CKP sensor connections.
Repair if necessary.
Check that the sensor is correctly mounted and that the flywheel target is not damaged.
Check that the gap between the CKP sensor and the engine flywheel is 0.5 – 1.8 mm (0.020 – 0.071 in.).
Measure the resistance of the CKP sensor between “C20-1” and “C20-2” terminals of CKP sensor connector.
If the coil resistance is not 720 – 880 

Ω at an engine temperature of 20 °C, 68 °F, replace the CKP sensor.

Check the ECM connections.
Repair if necessary.
Check the following connections for continuity and the absence of interference resistance:
• Between “C20-1” wire of CKP sensor connector and “C86-17” terminal of ECM connector
• Between “C20-2” wire of CKP sensor connector and “C86-16” terminal of ECM connector
Repair if necessary.
If the fault is still present, substitute a known-good ECM and recheck.

1A-50 Engine General Information and Diagnosis: 

DTC P0340: Camshaft Position Sensor “A” Circuit Malfunction

S5JB0B1104110

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after the engine is started or following a road test.A drop in engine 
speed followed by nominal behavior from the vehicle is possible.

• If this fault is present:

– It is impossible to start the vehicle.
– The Injection warning light (gravity 1 warning light) is lit.

• 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

1.DEF

No signal

2.DEF

Inconsistency of signal

Check the CMP sensor connections.
Check the ECM connections.
Check the CMP sensor mounting and positioning.
Also check its general condition, (damaged housing, heating up, etc.)
Carry out the necessary repairs.
Check the following connections for continuity and make sure there is no interference resistance:
• Between “C08-2” wire of CMP sensor connector and “C86-15” terminal of ECM connector
• Between “C08-1” wire of CMP sensor connector and “C86-18” terminal of ECM connector
With ignition switch ON and the CMP sensor connected:
• Use a voltmeter to measure the voltage across “C08-1” and “C08-3” wires of the CMP sensor connector:

The voltage displayed should be equal to the battery voltage 0.08 V)
– If the voltage is outside permitted tolerance values, take the measurement again on the connector, with the 

CMP sensor disconnected.

– If the voltage is still outside permitted tolerance values with the sensor disconnected.

• Check the following connection for continuity and the absence of interference resistance:

– Between “C08-3” wire of the CMP sensor connector and “E33-6” wire of main relay mounting connector

If the measured voltage is correct with the sensor disconnected.

Measure the CMP sensor resistance between “C08-2” and “C08-3” terminals.
Replace the sensor if the resistance is not 9750 – 10750 

Ω at 20 °C, 68 °F.

If the fault is still present, substitute a known-good ECM and recheck.

Engine General Information and Diagnosis:  1A-51

DTC P0380: Glow Plug / Heater Circuit “A” Malfunction

S5JB0B1104111

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after output test “Pre/Post Heater Relay Control” on SUZUKI scan tool, 
or after an attempted engine start.

• If the fault is present, it is difficult or even impossible to start the vehicle when cold.
• If the fault is present, the Injection warning light (gravity 1 warning light) is lit.
• 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 for CC.1: Short circuit to +12 V

Troubleshooting for CC.0: Open circuit or short circuit to vehicle body ground and CO: Open circuit

NOTE

• If the glow plug control module has a short circuit to vehicle body ground there is a risk that the 

glow plugs will be operated continuously.

• The glow plugs and the engine may be damaged.

 

Displaying on SUZUKI scan tool

Detecting condition

CC.1

Short circuit to +12 V

CC.0

Open circuit or short circuit to vehicle body ground

C0

Open circuit

1.DEF

Internal electronic fault

Check the glow plug control module connections and the glow plug supply cables.
Check the ECM connections.
Repair if necessary.
Check the condition of the 80A fuse on the battery fuse box.
Check for continuity and insulation against the +12 V feed on the following connections:
• Between “C74-3” wire of glow plug control module connector and “C85-1” terminal of ECM connector
• Between “C74-1” wire of glow plug control module connector and “C85-17” terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the glow plug control module.

Check the glow plug control module connections and the glow plug supply cables.
Check the ECM connections.
Repair if necessary.
Check the condition of the 80A fuse on the battery fuse box.
Check the continuity and insulation against vehicle body ground of the following connection:
• Between “C74-3” wire of glow plug control module connector and “C85-1” terminal of ECM connector
• Between “C74-1” wire of glow plug control module connector and “C85-17” terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the glow plug control module.

1A-52 Engine General Information and Diagnosis: 

Troubleshooting for 1.DEF: Internal electronic fault

DTC P0403: Exhaust Gas Recirculation Control Circuit Malfunction

S5JB0B1104112

NOTE

• Conditions for applying the fault finding procedure to stored faults:

The fault is declared present after a road test.

• The EGR function is deactivated if several faults with “DTC P0638: Throttle Actuator Control Range / 

Performance Malfunction” are present.

• If 1.DEF is present,

– The Injection warning light (gravity 1 warning light) is lit.
– The vehicle performances are reduced.
– There is smoke at the exhaust.

• 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

CAUTION

!

 

EGR valve data initialization procedure is required when the EGR valve is replaced.
The “EGR valve initial offset” and “EGR valve last offset” parameters must be reinitialised.
Refer to “EGR Valve Data Initialization in Section 1C” to carry out this programming.

 

Check the glow plug control module connections and the glow plug supply cables.
Check the ECM connections.
Repair if necessary.
Check the condition of the 80A fuse on the battery fuse box.
Check the continuity and insulation against vehicle body ground of the following connection:
• Between “C74-3” wire of glow plug control module connector and “C85-1” terminal of ECM connector
• Between “C74-1” wire of glow plug control module connector and “C85-17” terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the glow plug control module.

Displaying on SUZUKI scan tool

Detecting condition

1.DEF

Valve stuck open

1.DEF

Valve stuck closed

Check the EGR valve connections.
Check the ECM connections.
Repair if necessary.
Measure the resistance of the EGR valve motor between “C10-4” and “C10-6” terminals.
If the resistance displayed is not approximately 2.66 – 3.26 

Ω at 20 °C, 68 °F, replace the EGR valve.

Check the following connections for continuity and make sure there is no interference resistance:
• Between “C10-4” wire of EGR valve connector and “C86-26” terminal of ECM connector
• Between “C10-6” wire of EGR valve connector and “C86-25” terminal of ECM connector
Check there are no leaks on the EGR circuit: pipe pierced or damaged and that clamps are properly tightened.
Check the operation of the EGR valve:
Perform “Initialize EGR valve data” on SUZUKI scan tool to reinitialise the operating values of the valve and 
launch a programming procedure for the EGR offsets (Refer to “EGR Valve Data Initialization in Section 1C”).
If the valve is jammed or irrevocably seized, replace the EGR valve.