Ignition Timing: Inspection

Allow the engine to warm up to normal operating temperature.

INSPECT IGNITION TIMING 

1. Connect a LEXUS hand-held tester or OBDII scan tool to the DLC3.
   Fig 1: Connecting Hand-Held Tester To DLC3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details.
3. Start the engine at idle.
4. Check the ignition timing.

   Ignition timing: 8-12° BTDC at idle 

   (Transmission in neutral position) 

5. Disconnect a LEXUS hand-held tester or OBDII scan tool from the DLC3.

INSPECT IGNITION TIMING 

1. Connect tachometer test probe to terminal IG(-) of the check connector.
   Fig 2: Connecting Tachometer To Terminal IG(-) Of Check Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the tester probe of a timing light to the yellow lead wire of the ignition coil connector for No.1 cylinder.
   Fig 3: Connecting Tester Probe Of Timing Light To Yellow Lead Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using SST, connect terminals TC and E1 of the DLC1.

   SST 09843-18020

   Fig 4: Connecting Terminals TC And E1 Of DLC1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Start the engine at idle.
5. Check the ignition timing.

   Ignition timing: 8-12° BTDC at idle 

   (Transmission in neutral position) 

   Fig 5: Checking Ignition Timing Mark

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Remove the SST from the DLC1.

   SST 09843-18020

7. Remove the timing light from the engine.
8. Remove the tachometer.