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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System Description
Road TestToyota CH-R Service Manual > Cellular Communication: Manual(sos)switch
Components
COMPONENTS
ILLUSTRATION
*1
MAP LIGHT ASSEMBLY
*2
MANUAL (SOS) SWITCH (MAYDAY SWITCH ASSEMBLY)
*3
COVER
*4
BEZEL
Removal
REMOVAL
PROCEDURE
1. REMOVE MAP LIGHT ASSEMBLY
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Toyota CH-R Service Manual > Can Communication System: Check Bus 1 Line for Short to +B
DESCRIPTION
There may be a short circuit between one of the CAN bus lines and +B when no
resistance exists between terminal 23 (CA1H) of the central gateway ECU (network
gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 8 (CA1L) of the central
gateway ECU (network gateway ECU) and t ...