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 List and Active Test |
---|---|
Power source mode does not change to on (ACC) but does change to on (IG) |
Power Source Control
Starting Control
|
WIRING DIAGRAM
Click here
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
Click here
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
1. |
CHECK FOR DTC |
(a) Using the Techstream, check for certification ECU (smart key ECU assembly) DTCs.
Body Electrical > Power Source Control > Trouble Codes Body Electrical > Smart Key > Trouble Codes Body Electrical > Starting Control > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are not output |
A |
Smart key system (for Start Function) DTCs are output |
B |
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
2. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
Click here
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (ACC RELAY) |
Click here
NG |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
4. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Click here
OK |
USE SIMULATION METHOD TO CHECK |
NG |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Service Manual > Brake Booster: Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL VACUUM WARNING SWITCH ASSEMBLY
(a) Install a new check valve grommet to the brake booster assembly.
(b) Install the vacuum sensor assembly to the brake booster assembly
as shown in the illustration.
...
Toyota CH-R Service Manual > Meter / Gauge System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
When replacing the combination meter assembly, always replace it with a new one.
If a combination meter assembly which was installed to another vehicle is used,
the information stored in it will not match the information from the vehicle and
a DTC may be stored ...