2002 Toyota 4Runner BaseFACTORY OEM SERVICE PROCEDURE

Ignition Timing (4-Cylinder)

IGNITION TIMING (Degrees BTDC @ Idle) (4-CYLINDER) (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) 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.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.