Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 94

1A-323 Engine General Information and Diagnosis: For Diesel Engine Model

Troubleshooting for CC1: Short circuit to +12 V and D1: Micro-breaks

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: For Diesel Engine Model in Section 1C” to carry out this 
programming.

 

DTC P0500: VSS Malfunction 

S6JB0A1124116

NOTE

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

The fault is declared present during a road test.

• Use service wire for all operations on the ECM connectors.

 

Detecting Condition

Troubleshooting

Check the EGR valve connections.
Check the ECM connections.
Repair if necessary.
Measure the resistance of the EGR valve position feedback potentiometer between “C10-1”and “C10-2” 
terminals.
If the resistance displayed is not approximately 5.9 – 7.1 k

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

Check for continuity and insulation from +12 V on the following connections:
• Between “C10-3” wire of EGR valve connector and “C86-20” terminal of ECM connector
• Between “C10-2” wire of EGR valve connector and “C85-15” terminal of ECM connector
• Between “C10-1” wire of EGR valve connector and “C86-43” terminal of ECM connector
Repair if necessary.
Ensure the presence of +5 V on “C10-1”terminal of the EGR valve.
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: For Diesel Engine 
Model in Section 1C”).
If the valve is jammed or irrevocably seized, replace the EGR valve.

Displaying on SUZUKI scan tool

Detecting condition

D1

Inconsistency of signal

D2

Signal outside upper limit

D3

Configuration absent or incorrect

D4

CAN connection fault

Check the ABS or ESP

® control module connections.

Check the ECM connections.
Repair if necessary.
Check ABS control module assembly or ESP

® control module assembly for DTC referring to “DTC Check in 

Section 4E” or “DTC Check in Section 4F”.
Repair if necessary.
If the fault is still present, substitute a known-good ECM and recheck.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-324

DTC P0530: A/C Refrigerant Pressure Sensor Circuit

S6JB0A1124117

NOTE

• For vehicle not equipped with A/C system, it is not abnormal even if the DTC is detected.
• Conditions for applying fault finding procedures to stored faults:

The fault is declared present following a road test, or if the air conditioning is switched ON.

• If the fault is present, air conditioning is not authorized.
• 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 CC1: Short circuit to +12 V

Troubleshooting for CO0: Open circuit or short circuit to vehicle body ground

Displaying on SUZUKI scan tool

Detecting condition

CC1

Short circuit to +12 V

CO0

Open circuit or short circuit to vehicle body ground

Check the A/C refrigerant pressure sensor connectors.
Check the ECM connections.
Repair if necessary.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter “REFRIGERANT PRESSURE” on HVAC control module with SUZUKI scan tool and compare 
the value displayed by the filling station.
If the values match, carry out a fault finding procedure as described in the fault finding note for that vehicle.
If the values do not match, check the continuity and insulation against +12 V of the following connections:
• Between “E04- 3" wire of A/C refrigerant pressure sensor connector and “C86-13” terminal of ECM connector
• Between “E04-1” wire of A/C refrigerant pressure sensor connector and “C86-33” terminal of ECM connector
• Between “E04-2” wire of A/C refrigerant pressure sensor connector and “C85-9” terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the A/C refrigerant pressure sensor

Check the A/C refrigerant pressure sensor connector.
Check the ECM connections.
Repair if necessary.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter “REFRIGERANT PRESSURE” on HVAC control module with SUZUKI scan tool and compare 
the value displayed by the filling station.
If the values match, carry out a fault finding procedure as described in the fault finding note for that vehicle.
If the values do not match, check the continuity and insulation against vehicle body ground of the following 
connections:
• Between “E04-3” wire of A/C refrigerant pressure sensor connector and “C86-13” terminal of ECM connector
• Between “E04-1” wire of A/C refrigerant pressure sensor connector and “C86-33” terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the A/C refrigerant pressure sensor.

1A-325 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0544: Exhaust Gas Temperature Sensor 3 Circuit

S6JB0A1124118

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.

• If the fault is present, diesel particulate filter regenerations are not possible.

 

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

CO1

Open circuit or short circuit to +12 V

CC0

Short circuit to vehicle body ground

Check for the continuity, absence of interference resistance and insulation from +12 V for the following 
connections:
• Between “C88-1” wire of exhaust gas temperature sensor 3 connector and “C86-29” terminal of ECM 

connector

• Between “C88-2” wire of exhaust gas temperature sensor 3 connector and “C85-11” terminal of ECM 

connector

Repair if necessary.
Check the continuity, absence of interference resistance and insulation from vehicle body ground of the following 
connection:
• Between “C88-1” wire of exhaust gas temperature sensor 3 connector and “C86-29” terminal of ECM 

connector

Repair if necessary.
Check for the presence of ground on “C88-2” wire of the exhaust gas temperature sensor 3 connector.
Check the sensor resistance between “C88-1” and “C88-2” terminals of the exhaust gas temperature sensor 3 
connector according to parameter “Diesel PF out Temp” on Data list of SUZUKI scan tool.

Exhaust gas temperature sensor resistance:
132500 

Ω at 250 °C, 482 °F

52560 

Ω at 300 °C, 572 °F

3529 

Ω at 500 °C, 932 °F

1378 

Ω at 600 °C, 1112 °F

If the recorded values do not correspond to the above values, replace the exhaust gas temperature sensor 3.
If the fault is still present, substitute a known-good ECM and recheck.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-326

DTC P0560: System Voltage

S6JB0A1124119

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present following a road test or after attempting to start the engine several 
times.

• ECM operating voltage: 9 V < operating voltage < 16 V.
• Battery voltage that is too low can cause the level 1 fault warning light to come on thereby causing 

other faults to appear.

• It is then not possible to start the engine.
• 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 D1: Overvoltage

Troubleshooting for D2: Undervoltage

Displaying on SUZUKI scan tool

Detecting condition

D1

Overvoltage

D2

Undervoltage

Check the charge circuits:
Condition of the battery.
Condition of the alternator (full fault finding).
Carry out the necessary repairs.

With ignition switch OFF, measure the voltage across the battery terminals.
If the voltage is less than 11.5 V, test the battery.
If the battery is faulty, replace the battery then test the charge circuit.
With ignition switch ON and the with the starter motor turning, measure the voltage across the battery terminals.
If the voltage drops below 9.6 V, check the tightness and condition of the battery terminals.
Repair if necessary.
If the terminals are in good condition, test the battery.
If they are faulty, replace the battery.
If the starter is cranking the engine correctly, but the fault is still present,
Check the continuity and for the absence of interference resistance on the following connections:
• Between “E33-6” wire of main relay mounting connector and “C86-3” terminal of ECM connector
• Between “E33-6” wire of main relay mounting connector and “E66-2” terminal of ECM connector
• Between “E66-1”, “E66-7” and “E66-8” terminals of ECM connector and ground terminal at battery

Repair if necessary.