Toyota Camry (XV70): Electronic Circuit Inspection Procedure
	
						
			ELECTRONIC CIRCUIT INSPECTION PROCEDURE
 BASIC INSPECTION
 
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
 (1) Unless otherwise stated, all resistance measurements are standard values measured at an ambient temperature of 20
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   HOW TO PROCEED WITH TROUBLESHOOTING OPERATION FLOW 
HINT: Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure. Confirm the t
   
   
 
	
   GENERAL INFORMATION 
	A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical 
   
   
 
	
   ELECTRONIC CIRCUIT INSPECTION PROCEDURE BASIC INSPECTION 
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS (1) Unless otherwise stated, all resistance measurements are standard values measured at an
   
   
 
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   INSPECTION PROCEDURE 1. INSPECT REAR STEREO COMPONENT SPEAKER ASSEMBLY 
(a) With the speaker installed, check that there is no looseness or other abnormalities. 
(b) Check that there is no foreign matter in the speaker, no tears on the speaker cone or other abnormalities.   
	 (c) Measure the res
   
   
 
	
   DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects a malfunction in the telephone microphone assembly circuit.    
	DTC No.   Detection Item   
	DTC Detection Condition   Trouble Area     
		B157213   Microphone Circuit Open   
		Current at terminal MCVD is lower than t