Toyota 4Runner 2001-06

Timing Check

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Fig. An OBD-II compliant scan tool must be connected to DLC3


NOTE
Toyota's hand-held tester or an equivalent OBD-II scan tool must be used for this procedure.

  1. Warm the engine to normal operating temperature.
  2.  
  3. Connect an OBD-II compliant scan tool to the DLC3, located under the instrument panel on the driver's side. For additional information, please refer to the following topic(s): Driveability and Emission Controls, Reading Codes.
  4.  
  5. Shift the transmission to the N position.
  6.  
  7. Connect the tester probe of a timing light to the wire of the ignition coil connector for No. 1 cylinder.
  8.  
  9. Race the engine speed to 2500 rpm for approximately 90 seconds. Allow the engine speed to return to idle, which should be 650-750 rpm.
  10.  
  11. If not using a hand-held tester or an equivalent OBD-II scan tool, use SST 09843-18020, or its equivalent jumper wire, and connect the following terminals:
    1. 3.4L (5VZ-FE) Engine: TC and E1 of the DLC1 under the hood
    2.  
    3. 4.0L (1GR-FE) and 2UZ-FE Engine: TC and CG of the DLC3
    4.  

  12.  
  13. Using a timing light, check the ignition timing. It should be 8-12° BTDC at idle.
  14.  

 
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