Inspection Procedure
WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT RADIO RECEIVER
- Disconnect the radio receiver connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
VOLTAGE SPECIFICATIONTester Connection Condition Specified Condition E104-3 (MACC) - Body ground Ignition switch ON 4 to 6 V E104-1 (SNS2) - Body ground Ignition switch ON 4 to 6 V NG: REPLACE RADIO RECEIVER (See REMOVAL )
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (MICROPHONE - RADIO RECEIVER)
- Disconnect the microphone connector and the radio receiver connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance:
w/ Sliding Roof
RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition O10-9 (SNS2) - E104-1 (SNS2) Always Below 1 Ω O10-11 (MI1+) - E104-2 (MIC+) Always Below 1 Ω O10-10 (MIC-) - E104-5 (MIC-) Always Below 1 Ω O10-12 (ACC) - E104-3 (MACC) Always Below 1 Ω O10-9 (SNS2) - Body ground Always 10 kΩ or higher O10-11 (MI1+) - Body ground Always 10 kΩ or higher O10-10 (MIC-) - Body ground Always 10 kΩ or higher O10-12 (ACC) - Body ground Always 10 kΩ or higher w/o Sliding Roof
RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition O9-3 (SNS2) - E104-1 (SNS2) Always Below 1 Ω O9-2 (MIC+) - E104-2 (MIC+) Always Below 1 Ω O9-4 (MIC-) - E104-5 (MIC-) Always Below 1 Ω O9-1 (MACC) - E104-3 (MACC) Always Below 1 Ω O9-3 (SNS2) - Body ground Always 10 kΩ or higher O9-2 (MIC+) - Body ground Always 10 kΩ or higher O9-4 (MIC-) - Body ground Always 10 kΩ or higher O9-1 (MACC) - Body ground Always 10 kΩ or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )