TERMINALS OF ECM
CHECK ECM
HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
C63-59 (E1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
A38-1 (BATT) - C63-59 (E1) |
R - W-B |
Battery (for measuring battery voltage and for ECM memory) |
Always |
11 to 14 V |
|
C63-61 (LIN) - Body ground |
B - Body ground |
LIN communication line |
Ignition switch off (while LIN communication is stopped) |
10 kΩ or higher |
Problem Symptoms Table
Diagnosis SystemToyota CH-R Service Manual > Can Communication System: System Diagram
SYSTEM DIAGRAM
(a) The CAN communication system is composed of 5 buses.
*A
w/ Blind Spot Monitor System
-
-
CAN Main Bus Line
Terminating Resistor
CAN Branch Line
*
...
Toyota CH-R Service Manual > Charging System: Fail-safe Chart
FAIL-SAFE CHART
If any of the following DTCs are stored, the ECM enters fail-safe mode to allow
the vehicle to be driven temporarily.
DTC No.
Fail-safe Operation
Fail-safe Deactivation Condition
P161A
Generator command is maintained.
...