Inspection Procedure
- READ VALUE USING TECHSTREAM (IG1 RELAY MONITOR (INSIDE))
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG) and turn the Techstream on.
- Enter the following menus: Body Electrical / Main Body / Data List.
- Read the display on the Techstream.
Main Body
DATA LIST REFERENCETester Display Measurement Item/Range Normal Condition Diagnosis Note IG1 Relay Monitor (Inside) IG1 inner relay monitor/ON or OFF ON: Engine switch on (IG)
OFF: Engine switch off- OK:
When the engine switch is turned on (IG), ON is displayed on the Techstream.
NG: Go to step 3
OK: Go to next step
- CHECK SWITCH CONDITION (ENGINE SWITCH)
- Make sure that the electrical key is inside the cabin.
- With the shift lever in P, check that the power source mode changes as shown below each time the engine switch is pushed.
OK:
off → on (ACC) → on (IG) → off
NG: GO TO POWER SOURCE MODE DOES NOT CHANGE (See )
OK: USE SIMULATION METHOD TO CHECK (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
- INSPECT IG1 RELAY
- Remove the IG1 relay from the instrument panel junction block.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition 3 - 5 Battery voltage is applied to terminals 1 and 2 Below 1 Ω 3 - 5 Battery voltage is not applied to terminals 1 and 2 10 kΩ or higher NG: REPLACE IG1 RELAY
OK: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)