Toyota CH-R Service Manual: IG Power Supply Voltage (C1551)
DESCRIPTION
The power steering ECU assembly distinguishes the ignition switch status as ON or off through the IG power source circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
|---|---|---|---|---|---|---|
|
C1551 |
IG Power Supply Voltage |
Open or short in IG power source circuit with power switch on (IG) |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch is turned ON again |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- If the power steering ECU assembly has been replaced, perform assist
map writing and torque sensor zero point calibration.
Click here
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- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER STEERING ECU ASSEMBLY) |
|
(a) Disconnect the F68 and F23 power steering ECU assembly connectors. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F23-1 (IG) - Body ground |
Ignition switch ON |
8 to 16 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F68-2 (PGND) - Body ground |
Always |
Below 1 Ω |
| OK | .gif) |
REPLACE POWER STEERING ECU ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Assist Map Number Un-Writing (C1581)
DESCRIPTION
This DTC will be stored if the power steering ECU assembly determines that the
assist map is not written in the ECU.
DTC No.
Detection Item
DTC Detecti ...
Error in Matching of ECUs (C1567)
DESCRIPTION
Based on the steering sensor signal, the power steering ECU assembly determines
if the correct type of steering sensor is installed.
DTC No.
Detection Item
...
Other materials:
Toyota CH-R Service Manual > Front Seatback Heater: Components
COMPONENTS
ILLUSTRATION
*A
for Driver Side
*B
for Front Passenger Side
*C
w/ Vertical Adjuster
-
-
*1
FRONT SEAT CUSHION SHIELD
*2
FRONT SEAT INNER CUSH ...
Toyota CH-R Service Manual > Smart Key System(for Start Function): Power Source Mode does not Change to ON (IG)
DESCRIPTION
If the engine switch is pressed with the electrical key transmitter sub-assembly
in the cabin, the certification ECU (smart key ECU assembly) receives a signal and
changes the power source mode.
Related Data List and Active Test Items
Problem Symptom
Data Lis ...
Toyota C-HR (AX20) 2023-2025 Owner's Manual
Toyota CH-R Owners Manual
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