Inspection Procedure
- READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (IG2 RELAY MONITOR (INSIDE))
- Use the Data List to check if the ignition relay No. 2 (IG2) is functioning properly.
- Intelligent tester
MAIN BODY
DATA LIST - MAIN BODYTester Display Measurement Item/Range Normal Condition Diagnostic Note IG2 RELAY MON2 Ignition relay No 2 (IG2) inner relay monitor/ON or OFF ON: Power switch ON (IG)
OFF: Power switch OFF- - Techstream
Main Body
DATA LIST - MAIN BODYTester Display Measurement Item/Range Normal Condition Diagnostic Note IG2 Relay Monitor (Inside) Ignition relay No 2 (IG2) inner relay monitor/ON or OFF ON: Power switch ON (IG)
OFF: Power switch OFF- OK: When the power switch is turned ON (IG), ON is displayed on the tester.
- Intelligent tester
NG: Go to step 3
OK: Go to next Step
- Use the Data List to check if the ignition relay No. 2 (IG2) is functioning properly.
- CHECK POWER SWITCH (SWITCH CONDITION)
- Ensure the key is inside the cabin
- With the brake pedal released, check that the power source mode changes as shown below each time the power switch is pushed.
OK: OFF → ON (ACC) → ON (IG) → OFF
NG: Go to SMART ACCESS SYSTEM WITH PUSH-BUTTON START , (See POWER SOURCE MODE DOES NOT CHANGE )
OK: USE SIMULATION METHOD TO CHECK (See HOW TO PROCEED WITH TROUBLESHOOTING )
- INSPECT IGNITION RELAY NO. 2 (IG2)
- Remove the ignition relay No. 2 (IG2) from the engine room No 2 junction block
- Measure the resistance according to the value (s) in the table below
Standard resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition 3 - 5 When battery voltage is applied to terminals 1 and 2 Below 1 Ω 3 - 5 When battery voltage is not applied to terminals land 2 10 kΩ or higher
NG: REPLACE RELAY (See IGNITION RELAY NO. 2 )
OK: Go to next Step
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - IGNITION RELAY NO. 2 (IG2), BODY GROUND)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the L12 main body ECU connector
- Remove the ignition relay No 2 (IG2) from the engine room No 2 junction block.
- Measure the resistance according to the value (s) in the table below.
Standard resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition L12-11 (IG2D) - Ignition relay No. 2 (IG2) relay terminal 1 Always Below 1 Ω Ignition relay No. 2 (IG2) relay terminal 2 -Body ground Always Below 1 Ω L12-11 (IG2D) or ignition relay No. 2 (IG2) relay terminal 1 -Body ground Always 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE MAIN BODY ECU