Diagnostic Trouble Code Chart
HINT:
If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of code, refer to the "See page" below.
CAN Communication SystemDTC Code | Detection Item | Trouble Area | DTC Output from | See page |
|---|---|---|---|---|
U0100 |
Lost Communication with ECM / PCM "A" |
- Power source or inside ECM - ECM main wire or connector - ECM |
Power management control ECU |
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U0164 |
Lost Communication with A/C ECU |
- Power source or inside air conditioning amplifier assembly - Air conditioning amplifier assembly branch wire or connector - Air conditioning amplifier assembly |
Power management control ECU |
|
U1002 |
Lost Communication with Gateway Module (Power Management2) |
- Power management bus circuit - Air conditioning amplifier assembly branch wire or connector - Power management control ECU main wire or connector - ECM main wire or connector - Air conditioning amplifier assembly - Power management control ECU - ECM - No. 4 junction connector |
Power management control ECU |
|
U0208 |
Lost Communication with "Seat Control Module A" |
- Power source or inside front power seat switch LH - Front power seat switch LH branch wire or connector - Front power seat switch LH |
Main body ECU (multiplex network body ECU) |
|
U1002 |
Lost Communication with Gateway Module (MS Bus) |
- Main body ECU (multiplex network body ECU) - Drive monitor switch - Harness or connector |
Main body ECU (multiplex network body ECU) |
|
- MS bus circuit - Front power seat switch LH branch wire or connector - Main body ECU (multiplex network body ECU) main wire or connector - Combination meter assembly main wire or connector - Main body ECU (multiplex network body ECU) - Combination meter assembly - Front power seat switch LH - No. 2 junction connector |
Main body ECU (multiplex network body ECU) |
|
||
U1114 |
Lost Communication with Main Switch Module |
- Power source or inside drive monitor switch - Drive monitor switch main wire or connector - Drive monitor switch |
Main body ECU (multiplex network body ECU) |
|
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.