POWER DISTRIBUTION SYSTEM SYMPTOMS
Symptom Table
Before performing the diagnosis in the following table

Wiring diagram
PrecautionElectronic controlled engine mount
Description
In the idle range, ECM turns OFF the electronically-controlled engine mount
control solenoid valve and applies
manifold pressure to the electronically controlled engine mount. This decreases
damping force of the electronically-
controlled engine mount and absorbs vibrations trav ...
P0131, P0151 A/F sensor 1
Description
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor.
The sensor element of the A/F sensor 1 is composed an electrode
layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean ...
P0603 ECM power supply
Description
Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air volume
learning value memory, etc.
DTC Logic
DTC DETECTION LOGIC
DTC CON ...