FREEZE FRAME DATA
DESCRIPTION
The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
HINT:
If it is impossible to reproduce the symptoms even though a DTC is stored, confirm the freeze frame data.
PENDING FREEZE FRAME DATA
HINT:
Pending freeze frame data is stored when a 2 trip DTC is first detected during the first trip.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Powertrain > Engine and ECT > Trouble Codes(e) Select a DTC in order to display its pending freeze frame data.
HINT:
LIST OF FREEZE FRAME DATA
Powertrain > Engine and ECT|
Tester Display |
|---|
|
Battery Voltage |
|
Alternator Output Duty |
|
Alt Vol - Non Active Test |
|
Alt Vol - Active Test |
Dtc Check / Clear
Data List / Active TestToyota CH-R Service Manual > Automatic Headlight Beam Level Control System: Left Headlight ECU Variation Error (B2456)
DESCRIPTION
This DTC is stored when a headlight ECU sub-assembly LH which is not compatible
with the vehicle has been installed.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
B2456
Left Headligh ...
Toyota CH-R Service Manual > Pre-collision System: Utility
UTILITY
NOTICE:
When replacing a millimeter wave radar sensor assembly, replace it with a new
one.
If the millimeter wave radar sensor assembly has been replaced or removed/installed,
be sure to perform Front Beam Axis Adjustment. If not performed, DTC C1A14 will
be stored when the system i ...