IGNITION TIMING (Degrees BTDC @ Idle) (4-CYLINDER) ⁽¹⁾

Application

Base Timing

ECM Controlled Timing

Camry CNG & Gasoline Models, & Camry Solara

⁽²⁾ 8-12

⁽³⁾ 0-10

Celica

1.8L (1ZZ-FE)

⁽⁴⁾ 10-18

⁽⁵⁾

1.8L (2ZZ-GE)

⁽⁴⁾ 8-12

⁽⁵⁾

Corolla

⁽²⁾ 8-12

⁽³⁾ 6-15

ECHO

⁽⁴⁾ 8-12

⁽⁵⁾

Highlander

⁽⁴⁾ 8-12

⁽⁶⁾ 5-15

MR2

⁽⁴⁾ 8-12

⁽⁶⁾ 6-15

Prius ⁽⁷⁾

⁽⁴⁾ 7-15

⁽⁵⁾

RAV4

⁽⁴⁾ 8-12

⁽⁶⁾ 5-15

Tacoma

⁽⁴⁾ 3-7

⁽⁶⁾ 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) installed between terminals TE1 and E1 on data link connector No. 1.

⁽³⁾	With jumper wire removed from data link connector No. 1.

⁽⁴⁾	With Jumper Wire (SST 09843-18020) installed between terminals CG and TC on data link connector No. 3.

⁽⁵⁾	Information is not available from manufacturer.

⁽⁶⁾	With jumper wire removed from data link connector No. 3.

⁽⁷⁾	Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS . Check with transit in inspection mode and transaxle in Park.

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.

Safety Warning

Ignition Timing (4-Cylinder)

Use the Manual With the Right Hardware

When to See a Mechanic