Suzuki Grand Vitara JB419. Manual - part 28

Engine General Information and Diagnosis: 1A-89

DTC P2264: Water in Fuel Sensor Circuit Malfunction

S5JB0B1104140

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”.
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.

1A-90 Engine General Information and Diagnosis:

DTC P2413: Exhaust Gas Recirculation System Performance Malfunction

S5JB0B1104141

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.

• 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”.

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

Engine General Information and Diagnosis: 1A-91

DTC P242A: Turbine Inlet Temperature Sensor and Wake-up Sensor Failure Malfunction

S5JB0B1104142

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault becomes present if:
– The engine is started with a speed greater than 1750 rpm and a fuel flow greater than 30 mg/str.
– Or following a road test.

• If the fault is present:

– The EGR function is inhibited.
– Diesel particulate filter regenerations are inhibited.
– The vehicle performances are reduced.
– The Injection warning light (gravity 1 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

Open circuit

CC.1

Short circuit to +12 V

1.DEF

Signal outside upper limit

Check the continuity, absence of interference resistance and insulation from +12 V of the following connection:
• Between “C73-1” wire of exhaust gas temperature sensor 1 connector and “C85-5” terminal of ECM

connector

• Between “C73-2” wire of turbocharger upstream temperature sensor connector and “C85-22” terminal of ECM

connector

Repair if necessary.
Check the continuity, the absence of interference resistance and the insulation from vehicle body ground of the
following connection:
• Between “C73-1” wire of exhaust gas temperature sensor 1 connector and “C85-5” terminal of ECM

connector

Repair if necessary.
Check for the presence of ground on “C73-2” wire of the turbocharger upstream temperature sensor yellow
connector.
Check the exhaust gas temperature sensor 1 resistance between “C73-1” and “C73-2” terminals of the yellow
connector according to parameter “Turbo upst temp.” on Data List of SUZUKI scan tool.

exhaust gas temperature sensor 1 resistance:
1572 – 1972

Ω at 400 °C, 752 °F

675 – 775

Ω at 500 °C, 932 °F

343 – 383

Ω at 600 °C, 1112 °F

197 – 217

Ω at 700 °C, 1292 °F

126 – 136

Ω at 800 °C, 1472 °F

84 – 94

Ω at 900 °C, 1652 °F

If the recorded values do not correspond to the above values, replace the exhaust gas temperature sensor 1.
If the fault is still present, substitute a known-good ECM and recheck.

1A-92 Engine General Information and Diagnosis:

DTC P242B: Turbine Inlet Temperature Sensor Regulation Failure Malfunction

S5JB0B1104143

CAUTION

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

NOTE

• Conditions for applying fault finding procedures to stored faults:

The fault becomes present if:
– The engine is started with a speed greater than 1750 rpm and a fuel flow greater than 30 mg/str.
– Or following a road test.

• If the fault is present:

– Diesel particulate filter regenerations are inhibited.
– The vehicle performances are reduced.
– The Injection warning light (gravity 1 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

Parameter at maximum limit

2.DEF

Temperature measured too high

connector

• Between “C73-2” wire of exhaust gas temperature sensor 1 connector and “C85-22” terminal of ECM

connector

Repair if necessary.
Check for the presence of ground on “C73-2” wire of the exhaust gas temperature sensor 1 connector.
Check the sensor resistance between “C73-1” and “C73-2” terminals of the connector according to parameter
“Turbo upst temp.” on Data List of SUZUKI scan tool.

exhaust gas temperature sensor 1 resistance:
1572 – 1972

Ω at 400 °C, 752 °F

675 – 775

Ω at 500 °C, 932 °F

343 – 383

Ω at 600 °C, 1112 °F

197 – 217

Ω at 700 °C, 1292 °F

126 – 136

Ω at 800 °C, 1472 °F

84 – 94

Ω at 900 °C, 1652 °F

If the recorded values do not correspond to the above values, replace the exhaust gas temperature sensor 1.
If the fault is still present, substitute a known-good ECM and recheck.

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