Inspection Procedure
- READ VALUE OF DATA LIST (IG2 RELAY)
- Connect the Techstream to the DLC3.
- Turn the power switch ON (IG) and press the Techstream main switch ON.
- Read the DATA LIST according to the displays on the tester.
Power source control ECU
ITEM NORMAL CONDITION CHARTTester Display Measurement Item / Display Normal Condition Diagnostic Note IG2 Relay Monitor (Inside) IG2 inner relay monitor /
ON or OFFON: Power switch ON (IG)
OFF: Power switch OFF- OK : ON (power switch ON (IG)) appears on the screen.
OK : REPLACE POWER SOURCE CONTROL ECU
NG : GO TO NEXT STEP
- CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND)
- Disconnect the 3I junction block connector.
- Disconnect the P6 ECU connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
RESISTANCE TESTER CONNECTION SPECIFICATIONTester Connection Specified Condition 3I-2 - P6-35 (IG2D) Below 1 Ω 3I-3 - Body ground Below 1 Ω
NG : REPAIR OR REPLACE HARNESS AND CONNECTOR
OK : GO TO NEXT STEP
- CHECK ENGINE ROOM RELAY BLOCK
- Disconnect the 3I and 3K junction block connectors.
- Measure the resistance of the junction block connectors.
Standard resistance
RESISTANCE TESTER CONNECTION SPECIFICATIONTester Connection Condition Specified Condition 3K-1 - 3I-4 When battery voltage is not applied to terminals 3I-2 and 3I-3 10 kΩ or higher 3K-1 - 3I-4 When battery voltage is applied to terminals 3I-2 and 3I-3 Below 1 Ω
NG : REPLACE ENGINE ROOM RELAY BLOCK
OK : REPLACE POWER SOURCE CONTROL ECU