DIAGNOSIS SYSTEM
DESCRIPTION
(a) The certification ECU (smart key ECU assembly) and ECM control the vehicle immobiliser system functions. Immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3).
In some cases, a malfunction may be occurring in the immobiliser system even though the security indicator light is not illuminated.
When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
Click here
INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
START FUNCTION PROBLEM SYMPTOMS
Symptom |
Suspected Area |
Component Malfunction |
Possible Output DTCs |
Related Data List Item |
---|---|---|---|---|
Engine cannot be started*1 |
Certification ECU (smart key ECU assembly) |
Open or short circuit inside ECU |
|
|
Engine cannot be started*1 |
ID code box (immobiliser code ECU) |
Open or short circuit inside ECU |
|
|
ECM |
Open or short circuit inside ECU |
|
EFI Code Receive |
|
SFI system |
ECM incompatible with installed immobiliser system |
B279C |
|
|
Power source mode cannot be changed*1 |
Engine switch |
Open or short circuit inside switch |
B278A |
|
Certification ECU (smart key ECU assembly) |
Open or short circuit inside ECU |
|
|
|
Steering lock lock/unlock not possible*2 |
Steering lock ECU (steering lock actuator or upper bracket assembly) |
|
|
|
Click here
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Toyota CH-R Owners Manual > BSM (Blind Spot Monitor): BSM function
The BSM function uses radar sensors to detect the following vehicles traveling
in adjacent lanes and advises the driver of the presence of such vehicles via the
indicators on the outside rear view mirrors.
Vehicles that are traveling in areas that are not visible using the outside
rea ...
Toyota CH-R Service Manual > Rear Door Speaker: Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR SPEAKER ASSEMBLY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
...