DESCRIPTION
If a problem occurs in the system, the power source relay circuit and the motor relay circuit are shut off to stop power assist. The ECU must be replaced when there is a problem with the relays because the relays are built into the ECU.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1552 |
PIG Power Supply Voltage |
PIG power source circuit malfunction |
|
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1554 |
Power Supply Relay Failure |
Power source relay circuit malfunction |
|
EPS warning light: Comes on |
Ignition switch ON again |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BODY GROUND) |
(a) Disconnect the F68 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 |
---|---|---|
F68-1 (PIG) - Body ground |
Ignition switch ON |
9 to 16 V |
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Toyota CH-R Service Manual > Smart Key System(for Entry Function): Open in Outside Luggage Compartment Electrical Key Antenna Circuit (B27A8)
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and
transmits the signal to the electrical key antenna (outside luggage compartment).
For the electrical key antenna (outside luggage compartment) to detect when the
electrical key transmitter sub-assembly i ...
Toyota CH-R Service Manual > Continuously Variable Transaxle System: Transmission Range Sensor Circuit (PRNDL Input) (P0705)
DESCRIPTION
The park/neutral position switch and transmission control switch (shift lock
control unit assembly) detect the shift lever position and send signals to the ECM.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
...