Toyota Corolla Cross: System Malfunction Message is Displayed on the Multi-information Display
SYSTEM DESCRIPTION
If an abnormal vehicle speed information is detected by the certification ECU (smart key ECU assembly), a system malfunction message is displayed on the multi-information display.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Start Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
- The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
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- Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
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PROCEDURE
|
1. | CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes Body Electrical > Power Source Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
DTC is output. | B |
| B |
.gif) | GO TO SMART KEY SYSTEM (for Entry Function) (DIAGNOSTIC TROUBLE CODE CHART) |
|
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| 2. |
READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE)) |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Power Source Control > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle Running Condition (Line) |
Vehicle being driven or stopped |
Stop or Driving | Stop: Vehicle stopped Driving: Vehicle being driven at 5 km/h (3 mph) or more |
- |
|
Tester Display |
|---|
| Vehicle Running Condition (Line) |
OK:
The GTS display changes correctly in response to the vehicle condition.
| OK | | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| NG | | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
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Security Indicator Light Does not Blink
DESCRIPTION
The certification ECU (smart key ECU assembly) blinks the security indicator light (air conditioning control assembly) when the immobiliser is set (ignition switch off).
The cert
Immobiliser System does not Operate Properly
DESCRIPTION The immobiliser function compares the ID code that is registered in the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electric
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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 CO
Ultrasonic Sensor (Rear Right Corner) Missing Message (C1AE987)
DESCRIPTION
This DTC is output when an open circuit or short occurs in the
communication line between a rear corner ultrasonic sensor (RR sensor) and the rear
center ultrasonic sensor (RRC sensor), or when a malfunction occurs in a rear corner
ultrasonic sensor (RR sensor) on the rear.
