Toyota Corolla Cross: Clearance Warning ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the clearance warning ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY POWER SOURCE) |
(a) Disconnect the I24 clearance warning ECU assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
(1) for HEV Model:
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
I24-1 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
|
I24-1 (IG) - Body ground |
Ignition switch off |
Below 1 V |
(2) for Gasoline model:
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
I24-1 (IG) - Body ground |
Ignition switch ON |
10.5 to 16 V |
|
I24-1 (IG) - Body ground |
Ignition switch off |
Below 1 V |
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (for HEV Model) |
B |
|
NG (for Gasoline Model) |
C |
| B | .gif)
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| C |
|
GO TO STOP AND START SYSTEM |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BODY GROUND) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I24-31 (E) - Body ground |
Always |
Below 1 Ω |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Sensor Frozen Indication (Dirty or Frozen)
DESCRIPTION
When the ultrasonic sensor is dirty or frozen, "Parking Assist
Unavailable Please Clean Parking Assist Sensor" is displayed on the multi-information
display in the combinati
Precaution
PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY
TERMINAL
NOTICE:
After the ignition switch is turned off, there may be a waiting
time before disconnecting the nega
SEE MORE:
Remote Engine Starter does not Operate
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the certification ECU (smart key ECU assembly),
refer to smart key system (for Entry Function) Precaution.
for HEV Model:
Click here
for Gasoline Model:
Click here
PROCEDURE
1.
CHECK SMART KEY SYSTEM (for
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DESCRIPTION The engine stop and start ECU determines changes in the brake booster assembly pressure based on the voltage signal received from the vacuum sensor assembly in the brake booster assembly.
If the engine stop and start ECU judges that the signal received from the vacuum sensor assembly i
