Inspection Procedure
- CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - FRONT STEREO COMPONENT SPEAKER)
- Disconnect the navigation ECU connector N3 and front stereo component speaker connector T11.
- Measure the resistance according to the value(s) in the table below.
Resistance
TERMINALS RESISTANCE SPECIFICATIONTester connection Condition Specified Condition TWL+ - AUO+ Always Below 1 Ω TWL- - AUO- Always Below 1 Ω TWL+ - Body ground Always 10 kΩ or higher TWL- - Body ground Always 10 kΩ or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- INSPECT FRONT STEREO COMPONENT SPEAKER
- Check that the malfunction disappears when another speaker in good condition is installed.
OK: Malfunction disappears.
HINT:
- Connect all the connectors to the speakers.
- When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
OK: REPLACE FRONT STEREO COMPONENT SPEAKER
NG: Go to next step
- Check that the malfunction disappears when another speaker in good condition is installed.
- CHECK HARNESS AND CONNECTOR (FRONT NO.2 SPEAKER - FRONT STEREO COMPONENT SPEAKER)
- Disconnect the connectors from the front No.2 speaker and front stereo component speaker.
- Measure the resistance according to the value(s) in the table below.
Resistance
TERMINALS RESISTANCE SPECIFICATIONTester connection Condition Specified Condition T11-1 - F11-2 Always Below 1 Ω T11-3 - F11-1 Always Below 1 Ω T11-1 - Body ground Always 10 kΩ or higher T11-3 - Body ground Always 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step.
- INSPECT FRONT NO. 2 SPEAKER
- Check that the malfunction disappears when another speaker in good condition is installed.
OK: Malfunction disappears.
HINT:
- Connect all the connectors to the speakers.
- When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
NG: REPLACE FRONT NO. 2 SPEAKER
OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL
- Check that the malfunction disappears when another speaker in good condition is installed.