5/15/2018 2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic
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1 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic 2007 RX350 Report a problem with this article Last Modified: :00:00 J From: Model Year: 2007 Model: RX350 Doc ID: RM000000TMK00JX Engine Family: 2GR-FE Body Type: 5Dr. Wagon VDS: GK31U HK31U Title: 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) DESCRIPTION Fuel Pump Control Circuit DESCRIPTION The FUEL PUMP relay switches the fuel pump speed according to the engine conditions. The fuel pump operates when the ECM receives the starter-operating signal (STA) and crankshaft-rotating signal (NE). The FUEL PUMP relay is turned ON while the engine is idling or operating at low load. This causes current to flow through the fuel pump resistor to the fuel pump. The fuel pump then operates at low speed. The FUEL PUMP relay is turned OFF while the engine is cranking or operating at high load. The fuel pump then operates at normal speed.
2 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic WIRI DIAGRAM
3 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic INSPECTION PROCEDURE PROCEDURE 1. CHECK FUEL PUMP (a) Check if there is pressure in the fuel inlet hose. HINT: If there is fuel pressure, you will hear the sound of fuel flowing. INSPECT FUEL PUMP RELAY 2. PERFORM ACTIVE TEST USI INTELLIGENT TESTER (OPERATE C/OPN RELAY)
4 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic (a) Connect the intelligent tester to the DLC3. (b) Turn the ignition switch to the ON position and turn the intelligent tester or the OBD II scan tool main switch on. (c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD. (d) Check the relay operation while operating it using the intelligent tester. Standard: Operating noise can be heard from the relay. CHECK ECM POWER SOURCE CIRCUIT 3. INSPECT CIRCUIT OPENI RELAY (a) Remove the C/OPN relay from the R/B. (b) Measure the resistance of the C/OPN relay (When battery voltage is applied to terminals 1 and 2) REPLACE CIRCUIT OPENI RELAY
5 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic 4. INSPECT ECM (FC VOLTAGE) (a) Turn the ignition switch to the ON position. (b) Measure the voltage of the ECM connectors. Standard voltage: E5-10 (FC) - E7-1 (E1) 9 to 14 V REPLACE ECM 5. CHECK HARNESS AND CONNECTOR (ECM - CIRCUIT OPENI RELAY) (a) Disconnect the E5 ECM connector.
6 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic (b) Remove the C/OPN relay from the engine room R/B. (c) Measure the resistance between the terminals. Check for open Check for short FC (E5-10) - C/OPN terminal (2) FC (E5-10) or C/OPN terminal (2) - Body ground (d) Reconnect the ECM connector. (e) Reinstall the C/OPN relay. REPAIR OR REPLACE HARNESS OR CONNECTOR
7 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic 6. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENI RELAY - IGNITION SWITCH) (a) Reconnect the I14 ignition switch connector. (b) Remove the C/OPN relay from the engine room R/B. (c) Measure the resistance between the terminals. Check for open IG2 (I14-6) - C/OPN terminal (1) Check for short IG2 (I14-6) or C/OPN terminal (1) - Body ground (d) Reconnect the ignition switch connector.
8 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic (e) Reinstall the C/OPN relay. REPAIR OR REPLACE HARNESS OR CONNECTOR 7. CHECK ECM POWER SOURCE CIRCUIT REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT 8. INSPECT FUEL PUMP RELAY (a) Remove the fuel pump relay from the engine room R/B. (b) Measure the fuel pump relay resistance. Tester connection (When battery voltage is applied to terminals 1 and 2) (When battery voltage is applied to terminals 1 and 2) (c) Reinstall the fuel pump relay.
9 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic REPLACE FUEL PUMP RELAY 9. INSPECT FUEL PUMP (a) Measure the resistance of the fuel pump. (1) Measure the resistance between terminals 4 and 5. Condition C (68 F) 0.2 to 0.3 Ω (b) Check operation of the fuel pump. (1) Apply battery voltage to both terminals. Check that the pump operates. NOTICE: These tests must be done quickly (within 10 seconds) to prevent the coil from burning out. Keep the fuel pump as far away from the battery as possible. Always turn ON and OFF the voltage on the battery side, not ON the fuel pump side. REPLACE FUEL PUMP ASSEMBLY 10. CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP RELAY, FUEL PUMP - BODY GROUND) (a) Check the wire harness between the FUEL PUMP relay and fuel pump. (1) Remove the FUEL PUMP relay from the engine room R/B. (2) Disconnect the F16 fuel pump connector. (3) Measure the resistance between the terminal of the wire harness side connectors and body ground.
10 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic FUEL PUMP relay terminal 4 - F16-4 FUEL PUMP relay terminal 4 or F Body ground Specified Condition (b) Check the wire harness between the fuel pump and body ground. (1) Disconnect the F16 fuel pump connector. (2) Measure the resistance between the terminal of the wire harness side connector and body ground. F16-5 (Fuel pump) - Body ground REPAIR OR REPLACE HARNESS OR CONNECTOR 11. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENI RELAY - FUEL PUMP RELAY) (a) Remove the C/OPN relay from the engine room R/B.
11 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic (b) Remove the FUEL PUMP relay from the engine room R/B. (c) Measure the resistance between the terminals. Check for open Check for short C/OPN relay terminal (3) - FUEL PUMP relay terminal (3) C/OPN relay terminal (3) or FUEL PUMP relay terminal (3) - Body ground REPAIR OR REPLACE HARNESS OR CONNECTOR CHECK HARNESS AND CONNECTOR (EFI RELAY - C/OPN RELAY) 12. INSPECT FUEL PUMP RELAY (a) Remove the FUEL PUMP relay from the engine room R/B.
12 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic (b) Measure the FUEL PUMP relay resistance. Tester connection (When battery voltage is applied to terminals 1 and 2) (When battery voltage is applied to terminals 1 and 2) (c) Reinstall the FUEL PUMP relay. REPLACE FUEL PUMP RELAY 13. INSPECT FUEL PUMP RESISTOR (a) Disconnect the F17 fuel pump resistor connector. (b) Measure the fuel pump resistor resistance.
13 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic Condition C (68 F) 0.30 to 0.34 Ω (c) Reconnect the fuel pump resistor connector. REPLACE FUEL PUMP RESISTOR 14. CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - FUEL PUMP RESISTOR) (a) Disconnect the F17 fuel pump resistor connector. (b) Remove the FUEL PUMP relay from the engine room R/B. (c) Measure the resistance between the terminals. Check for open Check for short
14 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic FUEL PUMP relay terminal (4) - F17-2 FUEL PUMP relay terminal (5) - F17-1 FUEL PUMP relay terminal (4) or F Body ground FUEL PUMP relay terminal (5) or F Body ground (d) Reconnect the fuel pump resistor connector. (e) Reinstall the FUEL PUMP relay. REPAIR OR REPLACE HARNESS OR CONNECTOR 15. CHECK HARNESS AND CONNECTOR (FUEL PUMP RESISTOR - FUEL PUMP) (a) Disconnect the F17 fuel pump resistor connector. (b) Disconnect the F16 fuel pump connector. (c) Measure the resistance between the terminals. Check for open
15 5/15/2018 2GR-FE EINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Control Circuit (2007 RX350) 2007 Lexus RX350 MotoLogic Check for short F F16-4 F17-2 or F Body ground (d) Reconnect the fuel pump resistor connector. (e) Reconnect the fuel pump connector. REPAIR OR REPLACE HARNESS OR CONNECTOR PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Portions of materials contained herein have been reprinted under license from Toyota Motor Sales, U.S.A., Inc., License Agreement TMS1004
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385 P2237 / Open (Bank 1 Sensor 1) P2238 Low (Bank 1 Sensor 1) P2239 High (Bank 1 Sensor 1) P2240 P2241 / Open (Bank 2 Sensor 1) Low (Bank 2 Sensor 1) P2242 High (Bank 2 Sensor 1) P2252 Low (Bank 1 Sensor
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DI63 DI7DE01 DTC P0300 Random/Multiple Cylinder Misfire Detected DTC P0301 Cylinder 1 Misfire Detected DTC P0302 Cylinder 2 Misfire Detected DTC P0303 Cylinder 3 Misfire Detected DTC P0304 Cylinder 4 Misfire
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DTC P0300 Random/Multiple Cylinder Misfire Detected
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DTC P2440 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN BANK1 DTC P2441 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK CLOSE BANK1
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DTC P0300 RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED DTC P0301 CYLINDER 1 MISFIRE DETECTED DTC P0302 CYLINDER 2 MISFIRE DETECTED
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A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM (for 1GR-FE)... Model Year: 2007 Model: 4Runner Doc ID: RM000000W80023X
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DI98 DIGNOSTICS EINE (1GRFE) DIDT801 DTC P0100 Mass or Volume ir Flow Circuit DTC P010 Mass or Volume ir Flow Circuit Low Input DTC P0103 Mass or Volume ir Flow Circuit High Input CIRCUIT DESCRIPTION The