COMPONENTS
ILLUSTRATION
 
ILLUSTRATION
 
 Removal
RemovalECU Power Source Circuit
   	DESCRIPTION
When the ignition switch is turned to ON, voltage from the ECM's MREL terminal 
is applied to the EFI MAIN relay. This causes the contacts of the EFI MAIN relay 
to close, which supplies power to terminal +B of the TCM.
WIRING DIAGRAM
PR ...
   	
How To Proceed With Troubleshooting
   	HOW TO PROCEED WITH TROUBLESHOOTING
1. OPERATION FLOW
HINT:
Perform troubleshooting in accordance with the procedure below. The following 
is an outline of basic troubleshooting procedure. Confirm the troubleshooting procedure 
for the circuit you are wor ...
   	
Terminals Of Ecu
   	TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the D47 air conditioning amplifier assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table 
below.
HINT:
Measure the values on the wi ...