Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Ignition Timing: Testing and Inspection

INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.





2. CONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL
a. Connect the TOYOTA hand-held tester or OBDII scan tool to the DLC3.
b. Please refer to the TOYOTA hand-held tester or OBDII scan tool operator's manual for further details.





3. CONNECT TIMING LIGHT TO ENGINE
Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
4. DISCONNECT TIMING LIGHT FROM ENGINE
5. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL