DESCRIPTION
If the power steering ECU assembly detects a malfunction, the power steering ECU assembly stores a DTC and illuminates the EPS warning light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR |
(a) Jiggle the power steering ECU assembly connectors and wire harness up and down, and left and right to check the illumination condition of the EPS warning light in the combination meter assembly.
OK:
The EPS warning light illumination condition does not change.
HINT:
When the EPS warning light is operating properly, it comes on when the ignition switch is turned to ON and goes off when the engine is started.
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
CAN communication system DTCs are not output. |
A |
CAN communication system DTCs are output. |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM
|
|
3. |
CHECK HARNESS AND CONNECTOR (IG POWER SUPPLY - GROUND) |
(a) Disconnect the F68 and F23 power steering ECU assembly connectors.
*a |
Front view of wire harness connector (to Power Steering ECU Assembly) |
(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 |
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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F68-2 (PGND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Connect the F68 and F23 power steering ECU assembly connectors.
(b) Perform the Active Test of the combination meter assembly using the Techstream.
Body Electrical > Combination Meter > Active Test
Tester Display |
---|
Indicat. EPS |
(c) Check the combination meter assembly.
OK:
The EPS warning light turns on or off in accordance with the Techstream operation.
OK | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
NG | ![]() |
GO TO METER / GAUGE SYSTEM |
Toyota CH-R Service Manual > Lighting System: Operation Check
OPERATION CHECK
AUTOMATIC LIGHT CONTROL SYSTEM OPERATION CHECK
(a) Turn the ignition switch to ON.
(b) Turn the light control switch to the AUTO position.
(c) Cover the automatic light control sensor.
(d) Check that the taillights and low beam headlights come on.
(e) Uncover the automatic ligh ...
Toyota CH-R Service Manual > Immobiliser System(w/o Smart Key System): Antenna Coil Open / Short (B2784)
DESCRIPTION
When an open or short circuit is detected in the antenna coil built into the
transponder key coil, the transponder key ECU assembly stores this DTC.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
...