Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 101

1A-351 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P2141: EGR Motor Control Circuit Low

S6JB0A1124138

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.

• This fault can result in a rapid and significant fouling of the diesel particulate filter. If the EGR valve

needs to be replaced to deal with the fault, it must be cleared.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after a road test.

• If the fault is present:

– The EGR function is inhibited.
– Diesel particulate filter regenerations are inhibited.
– Turbocharging is disabled,
– The Injection warning light (gravity 1 warning light) is lit.

• Use service wire for any operation on the ECM connectors.

Troubleshooting

Check the connections of the EGR valve
Check the ECM connections.
Repair if necessary.
• Check the operation of the EGR valve:

Perform Test 7 referring to “Test 7: Exhaust gas recirculation valve: For Diesel Engine Model”.

• If the fault if still present, perform “Initialization EGR valve data” on SUZUKI scan tool to reintialise 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.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-352

DTC P2142: EGR Motor Control Circuit High

S6JB0A1124139

CAUTION

• EGR valve data initialization procedure is required when the EGR valve is replaced.

• This fault can result in a rapid and significant fouling of the diesel particulate filter. If the EGR valve

needs to be replaced to deal with the fault, it must be cleared.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after a road test.

• If the fault is present:

– The EGR and turbocharging functions are inhibited.
– The Injection warning light (gravity 1 warning light) is lit.

• Use service wire for any operation on the ECM connectors.

Troubleshooting

Check the connections of the EGR valve
Check the ECM connections.
Repair if necessary.
• Check the operation of the EGR valve:

Perform Test 7 referring to “Test 7: Exhaust gas recirculation valve: For Diesel Engine Model”.

• If the fault if still present, perform “Initialization EGR valve data” on SUZUKI scan tool to reinitialize the

1A-353 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P2264: Fuel Filter Water Detection Sensor Circuit

S6JB0A1124140

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.

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

Troubleshooting

NOTE
If the level of water in the fuel filter unit is lower than the electrodes on the sensor, certain driving
conditions (on a bend, leaning) may cause the injection fault warning light to light up erratically.

1. Check the conformity and quality of the fuel.
2. Check the sealing of the reservoir and the low pressure circuit by applying fault finding-Tests Test 2 referring

to “Test 2: Low pressure circuit check: For Diesel Engine Model”.
a. Make sure the water in fuel filter water detection sensor is properly connected.

– If not, clear the fault.
– Carry out a road test (speed > 20 km/h (12 mph) and engine speed > 1200 rpm) for more than 30

seconds.

– If the fault does not recur, end the fault finding procedure.
– If the fault does recur, go to next step.

b. If the sensor is properly connected:

– Drain the fuel filter unit.
– Clear the fault.
– Carry out a road test (speed > 20 km/h (12 mph) and engine speed > 1200 rpm) for more than 30

seconds.

– If the fault does not reappear, finish the fault finding procedure.

c. If the fault recurs:

Check for continuity and the absence of interference resistance on the connection between:
– Between “C82-1” wire of water detection sensor connector and “C85-13” terminal of ECM connector

3. Check the power supply to the water detection sensor:

– Between “C82-3” wire of water detection sensor connector and “E33-6” wire of main relay mounting

connector

– Between “C82-2” wire of water detection sensor connector and vehicle body ground

Carry out the necessary repairs.
If all these checks reveal no irregularities:
• Replace the water detection sensor including fuel filter case.
• Clear the fault.
• Carry out a road test (speed > 20 km/h (12 mph) and engine speed > of 1200 rpm) for more than 30 seconds,

to confirm the repair.

Engine General Information and Diagnosis: For Diesel Engine Model 1A-354

DTC P2413: EGR System Performance

S6JB0A1124141

CAUTION

• EGR valve data initialization procedure is required when the EGR valve is replaced.

• This fault can result in a rapid and significant fouling of the diesel particulate filter. If the EGR valve

needs to be replaced to deal with the fault, it must be cleared.

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault is declared present after a road test.

• If the fault is present:

– There is heavy smoke at the exhaust.
– The Malfunction indicator light (MIL) will come on after three consecutive driving cycles (starting

+5 seconds + turn OFF ignition switch and wait 40 seconds.).

• Use service wire for any operation on the ECM connectors.

Troubleshooting

Check the connections of the EGR valve.
Check the ECM connections.
Repair if necessary.
• Check the operation of the EGR valve:

Perform Test 7 referring to “Test 7: Exhaust gas recirculation valve: For Diesel Engine Model”.

• If the fault if still present, perform “Initialization EGR valve data” on SUZUKI scan tool to reinitialize the

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