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Ignition Timing: TACOMA

  1. Start engine and warm engine to normal operating temperature. Shut engine off. Connect timing light lead to Black/Red wire at ignition coil for cylinder No. 1. Cylinder No. 1 is front cylinder at timing chain end of engine.
  2. Apply parking brake. Place transmission in Neutral. Note location of data link connector No. 3 at driver's side of instrument panel. See Fig 10. Install Jumper Wire (SST 09843-18020 or SST 09843-18040) between terminals No. 4 (CG) and 13 (TC) on data link connector No. 3. See Figure. Start engine. Engine speed should increase to about 1000 RPM for 5 seconds and return to idle.
  3. Check ignition timing with engine idling. Timing marks are located on timing chain cover, near crankshaft pulley. Ensure base timing is within specification at idle with transmission in Neutral, and with A/C and all accessories off. See IGNITION TIMING SPECIFICATIONS  table.
  4. Remove jumper wire from data link connector No. 3. Ensure ECM controlled timing is within specification. See IGNITION TIMING SPECIFICATIONS  table. Shut engine off. Remove timing light.
    IGNITION TIMING SPECIFICATIONS (Degrees BTDC @ Idle)(1)

    Application Base Timing ECM Controlled Timing
    Camry & Camry Solara (2) 8-12 (3) 5-15
    Celica
    1.8L (1ZZ-FE) (2) 10-18 (4)
    1.8L (2ZZ-GE) (2) 8-12 (4)
    Corolla (5) 8-12 (6) 6-15
    ECHO (2) 8-12 (4)
    Highlander (2) 8-12 (3) 5-15
    MR2 (2) 8-12 (3) 6-15
    Prius (7) (2) 7-15 (4)
    RAV4 (2) 8-12 (3) 5-15
    Tacoma (2) 3-7 (3) 4-17
    (1) Check with engine at normal operating temperature, transaxle/transmission in Neutral (except Prius, in Park on Prius), parking brake applied, and A/C and all accessories off.
    (2) With Jumper Wire (SST 09843-18020 or SST 09843-18040) installed between terminals No. 4 (CG) and 13 (TC) CG on data link connector No. 3.
    (3) With jumper wire removed from data link connector No. 3.
    (4) Information is not available from manufacturer.
    (5) With Jumper Wire (SST 09843-18020 or SST 09843-18040) installed between terminals TE1 and E1 on data link connector No. 1.
    (6) With jumper wire removed from data link connector No. 1.
    (7) Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS . Check with transit in inspection mode and transaxle in Park.
Fig 1: Locating Data Link Connector No. 3 (Camry)
G00025452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Locating Data Link Connector No. 3 (Camry Solara)
G99J08029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Locating Data Link Connector No. 3 (Celica)
G99B52820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Locating Data Link Connector No. 3 (Corolla)
G97I28868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Locating Data Link Connector No. 3 (ECHO)
G99E52823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 6: Locating Data Link Connector No. 3 (Highlander)
G00016690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 7: Locating Data Link Connector No. 3 (MR2)
G00016686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 8: Locating Data Link Connector No. 3 (Prius)
G00016681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 9: Locating Data Link Connector No. 3 (RAV4)
G00016677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 10: Locating Data Link Connector No. 3 (Tacoma)
G97E28872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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