Ignition Timing: Inspection

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
CHECK IDLE SPEED (See IDLE SPEED )
CONNECT TIMING LIGHT TO ENGINE
Connect the timing light clip to the black lead wire.

NOTE: Use a timing light that can detect the primary signal.

Fig 1: Connecting Timing Light Clip To Black Lead Wire
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT IGNITION TIMING
1. Using SST, connect terminals TC and CG of the DLC3.
  1. SST 09843-18040
  Fig 2: Connecting Terminals TC And CG Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a timing light, check the ignition timing.
  1. Ignition timing:10 +/- 2° BTDC at idle
  (Transmission in neutral position)
  
  Fig 3: Checking Ignition Timing Using Timing Light
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the SST from the DLC1.
FURTHER CHECK IGNITION TIMING
1. Ignition timing: 6 - 16° BTDC at idle
(Transmission in neutral position)

HINT:

The timing mark moves in a range between 6° and 16°.
DISCONNECT TIMING LIGHT FROM ENGINE