CHECK FOR INTERMITTENT PROBLEMS
HINT:
Inspect the ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.
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Toyota CH-R Service Manual > Window Defogger System: Data List / Active Test
DATA LIST / ACTIVE TEST
ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and
other items to be operated without removing any parts. This non-intrusive functional
inspection can be very useful because intermittent operation may be discovered before ...
Toyota CH-R Service Manual > Steering Lock System: Dtc Check / Clear
DTC CHECK / CLEAR
NOTICE:
The steering lock ECU (steering lock actuator or upper bracket assembly)
does not store history DTCs. If any DTCs are output, confirm and record
them as soon as possible. Do not turn the engine switch off or clear the
DTCs until the DTCs are confirmed ...