RM3660EC _51 Engine / Hybrid System _080750 NR Series FUEL _0393845 FUEL SYSTEM G

NR Series FUEL FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE

Hide Display 1.CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK

Check fuel pump operation.

Connect the GTS to the DLC3.

ii.

Turn the ignition switch to ON.

NOTICE:: Do not start the engine.

iii.

Turn the GTS on.

iv.

Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.

Powertrain > Engine > Active Test

Tester Display
Activate the Circuit Relay (with Brush)

50004 372 24

Check for pressure in the fuel tube sub-assembly from the fuel line. Check that sounds of fuel flowing from the fuel tank assembly can be heard. If no sounds can be heard, check the relay, fuel pump with filter assembly, ECM and wiring connectors.

Inspect for fuel leaks.

Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.

Turn the ignition switch off.

Disconnect the GTS from the DLC3.

Hide Display 2.CHECK FUEL PRESSURE

Discharge fuel system pressure.

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL SYSTEM>PRECAUTION202304,999999,_51,_080750,_0393845,RM100000002BH2H,

Measure the battery voltage.

Standard Voltage:: 11 to 14 V

Disengage the clamp.

Disconnect the fuel tube sub-assembly.

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL SYSTEM>PRECAUTION202304,999999,_51,_080750,_0393845,RM100000002BH2H,

0.219,1.031 0.333,1.031 0.333,1.031 0.427,1.292 false 1.604,0.354 1.719,0.354 1.719,0.354 1.844,0.438 false 2.594,1.104 2.792,0.719 2.792,0.719 2.896,0.719 false 0.938,3.083 1.146,3.083 false 1.083,3.75 1.292,3.75 false 1.167,4.083 1.375,4.083 false 2.719,2.563 2.865,2.25 2.865,2.25 2.948,2.25 false 1.365,1.917 1.438,1.635 1.438,1.635 1.531,1.635 false 1.385,1.094 1.385,0.906 false 1.76,1.26 1.875,1.26 1.875,1.26 1.99,1.021 false 1.302,1.115 1.615,1.271 0.313,0.156 10 false *1 1.427,0.26 1.74,0.417 0.313,0.156 10 false *a 1.604,1.177 1.917,1.333 0.313,0.156 10 false *b 0.063,0.938 0.375,1.094 0.313,0.156 10 false *c 1.573,1.552 1.885,1.708 0.313,0.156 10 false *d 3,2.167 3.313,2.323 0.313,0.156 10 false *e 0.927,3.667 1.24,3.823 0.313,0.156 10 false *f 1.01,3.979 1.25,4.208 0.24,0.229 10 false *g 2.938,0.635 3.25,0.792 0.313,0.156 10 false *a 0.781,2.979 1.094,3.135 0.313,0.156 10 false *a

*1	Fuel Tube Sub-assembly (Vehicle Side)
*a	SST (Hose Band)
*b	SST (T-joint)
*c	SST (Gauge)
*d	SST (Hose Joint)
*e	SST (Hose)
*f	SST (Fuel Tube Connector)
*g	Fuel Pipe (Vehicle Side)

Install SST (EFI fuel pressure gauge) as shown in the illustration.

SST: 09268-45101 (09268-41250, 09268-41260, 09268-41280, 09268-41500, 09268-41700, 95336-08070)

Wipe up any spilled fuel.

Connect the cable to the negative (-) battery terminal.

Click hereGeneral>MAINTENANCE>NR Series BATTERY>INSTALLATION202304,999999,_V1,_080956,_0392375,RM100000002BCCN,

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

NOTICE:: Do not start the engine.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.

Powertrain > Engine > Active Test

Tester Display
Activate the Circuit Relay (with Brush)

50004 372 24

Measure the fuel pressure.

Standard Fuel Pressure:: 196 to 588 kPa (2.0 to 6.0 kgf/cm², 28 to 85 psi)

If the fuel pressure is more than the standard, replace the fuel pressure regulator assembly.

If the fuel pressure is less than the standard, check the fuel hoses and their connections, fuel pump with filter assembly, fuel filter (fuel suction plate sub-assembly) and fuel pressure regulator assembly.

Disconnect the GTS from the DLC3.

Start the engine.

Measure the fuel pressure at idle.

Standard Fuel Pressure:: 196 to 588 kPa (2.0 to 6.0 kgf/cm², 28 to 85 psi)

HINT:: Refer to Standard Idle Speed.; Click hereEngine / Hybrid System>NR Series (ENGINE MECHANICAL)>ENGINE>ON-VEHICLE INSPECTION201906,999999,_51,_080739,_0391929,RM100000001HN1S_01_0016,

Stop the engine.

Check that the fuel pressure remains as specified for 5 minutes.

Standard Fuel Pressure:: 147 kPa (1.5 kgf/cm², 21 psi) or more

If the result is not as specified, check the fuel pump with filter assembly, fuel pressure regulator assembly and/or fuel injector assemblies.

After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent fuel from spraying.

Click hereGeneral>MAINTENANCE>NR Series BATTERY>REMOVAL202304,999999,_V1,_080956,_0392375,RM100000002BCCL,

Connect the fuel tube sub-assembly.

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL SYSTEM>PRECAUTION202304,999999,_51,_080750,_0393845,RM100000002BH2H,

Engage the clamp.

Connect the cable to the negative (-) battery terminal.

Click hereGeneral>MAINTENANCE>NR Series BATTERY>INSTALLATION202304,999999,_V1,_080956,_0392375,RM100000002BCCN,

Inspect for fuel leaks.

Click hereEngine / Hybrid System>NR Series (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION202304,999999,_51,_080750,_0393845,RM100000002BH2I_01_0001,

Hide Display 3.CHECK FUEL PRESSURE (for High Pressure)

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Start the engine and warm it up.

Enter the following menus: Powertrain / Engine / Data List / High Fuel Pressure Sensor.

Powertrain > Engine > Data List

Tester Display
High Fuel Pressure Sensor

50003 372 47

Read the values.

Standard:

GTS Display	Condition	Specified Condition
High Fuel Pressure Sensor	Shift lever position: P or neutral A/C: Off Engine idling	2.4 to 30 MPa
High Fuel Pressure Sensor	Shift lever position: P or neutral A/C: Off Engine speed: 3000 rpm	2.4 to 30 MPa

Stop the engine.