Ignition Timing: Inspection

Allow the engine to warm up to normal operating temperature.

1. Connect the LEXUS hand-held tester or OBDII scan tool to the DLC3.
2. Please refer to the hand-held tester or OBDII scan tool operator's manual for further details.
   Fig 1: Connecting LEXUS Hand Held Tester To DLC3 Connector

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1. Using SST, connect terminals TC and E1 of the DLC1.

   SST 09843-18020

   Fig 2: Locating TC And E1 Terminals Of DLC1 Connector

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2. Connect the timing light clip to the white lead wire.
   NOTE: Use a timing light that can detect the primary signal.
   Fig 3: Locating Igniter And White Lead Wire

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3. Using a timing light, check the ignition timing.

   Ignition timing: 10 +/- 2° BTDC @ idle 

   (Transmission in neutral position) 

Fig 4: Locating Ignition Timing Idle Timing Mark
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4. Remove the SST from the DLC1.

Ignition timing: 6 - 16° BTDC @ idle 

(Transmission in neutral position) 

HINT:

The timing mark moves in a range between 6° and 16°.