On-Vehicle Inspection

HINT:

The spark test cannot be performed when the master warning lamp lights up.

1. Check the DTCs (See DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
   NOTE: If a DTC is present, perform troubleshooting in accordance with procedures for that DTC. 
2. Remove the rear floor board No. 2 (See BATTERY (1 NZ-FXE) ).
3. Remove the deck floor box rear (See BATTERY (1 NZ-FXE) ).
4. Remove the rear floor board No. 3 (See BATTERY (1 NZ-FXE) ).
5. Disconnect the engine wire No. 3 (battery negative terminal) (See BATTERY (1 NZ-FXE) ).
6. Remove the engine room relay block No. 2 (See REMOVE COIL NO.1 (1NZ-FXE)  ).
7. Remove all the ignition coils (See REMOVE COIL NO.1 (1NZ-FXE)  ).
8. Remove all the spark plugs.
   1. Using a spark plug wrench 16 mm, remove all the spark plugs.

      Torque: 18 N.m (184 kgf.cm, 13 ft.lbf) 

9. Remove the air cleaner (See REPLACEMENT ).
10. Disconnect all the fuel injector connectors.
11. Install the air cleaner (See REPLACEMENT ).
12. Connect the engine wire No. 3 (battery negative terminal) (See BATTERY (1 NZ-FXE) ).
    Fig 1: Removing Spark Plugs

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
13. Connect the hand-held tester to the DLC3.
14. Turn the power switch ON (IG).
15. Turn the hand-held tester ON.
16. On the hand-held tester, select the item: DIAGNOSIS / OBD/MOBD / HV ECU / ACTIVE TEST / CRANKING RQST.
17. Forcibly keep the throttle body link fully open by hand.
18. Install the removed spark plug to the ignition coil No. 1, then connect the ignition coil connector.
    Fig 2: Connecting Hand-Held Tester To DLC3

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
19. Ground the electrode of the spark plug, then check that a spark occurs when pushing the power switch with depressing the brake pedal starts the engine cranking operation.
    NOTE:

    • Keep the ignition coil No. 1 straight when checking. If it is laid on its side, keep it straight for over 5 minutes before checking. 
    • Be sure to ground the spark plug when checking. 
    • Replace the ignition coil No. 1 with a new one if it is dropped and impact is given. 

    HINT:

    If a spark does not occur, perform the following test.

NG: GO TO NEXT STEP. 

1. NG: CONNECT SECURELY 
2. OK: GO TO NEXT STEP. 

1. Replace the ignition coil No. 1 with a normal ignition coil No. 1, then perform the test again.
   1. OK: REPLACE IGNITION COIL NO. 1 (See  REMOVE COIL NO. 1 (1NZ-FXE)   ) 
   2. NG: GO TO NEXT STEP. 

1. Disconnect the ignition coil connector.
2. Turn the power switch ON (IG).
3. Using a voltmeter, measure the voltage between the terminals.

   Standard: 

   VOLTAGE CHECK SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   1 (+B) - 4 (GND)	9.0 to 14 V

   Fig 3: Checking Power Supply To Ignition Coil No. 1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: WIRE HARNESS (BETWEEN IGNITION CONTROL COMPUTER AND IGNITION COIL No. 1) 
2. OK: GO TO NEXT STEP. 

1. NG: REPLACE CAMSHAFT POSITION SENSOR (See  CAMSHAFT POSITION SENSOR (1NZ-FXE)   ) 
2. OK: GO TO NEXT STEP. 

1. NG: REPLACE CRANKSHAFT POSITION SENSOR (See  CRANKSHAFT POSITION SENSOR (1NZ-FXE)   ) 
2. OK: GO TO NEXT STEP. 

1. NG: REPLACE ECM (See  ECM (1NZ-FXE)  ) 
2. OK: GO TO NEXT STEP. 

   REPAIR WIRE HARNESS (BETWEEN IGNITION COIL ASSY AND ECM)