Ignition Timing: Inspection

WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
CHECK IDLE SPEED (See INSPECTION )
CONNECT TIMING LIGHT
Connect the tester probe of a timing light to the black-white service wire of the engine wire as shown in Fig 1.

Fig 1: Connecting Timing Light
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT IGNITION TIMING
1. Using SST, connect terminals to TC and CG of the DLC3.
  SST 09843-18040
  
  Fig 2: Connecting Terminals To TC & CG Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  After engine rpm is kept at 900 - 1,500 rpm for 5 seconds, check that it returns to idle speed.
2. Using a timing light, check the ignition timing.
  Ignition timing: 8 to 12° BTDC @ idle
3. Remove the SST from the DLC3.
FURTHER CHECK IGNITION TIMING
Ignition timing: 5 to 15° BTDC @ idle

HINT:

The timing mark moves in a range between 5 and 15°.
DISCONNECT TIMING LIGHT