Toyota 4Runner manuals

Toyota 4Runner: Diagnostic Trouble Code Chart

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 System

DTC 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


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)


Fail-safe Chart
FAIL-SAFE CHART 1. FAIL-SAFE FUNCTION (a) When communication fails in any of the main wires (communication lines) due to a short circuit or other causes, the fail-safe function, which is specified ...

Lost Communication with Gateway Module (Power Management2) (U1002)
DESCRIPTION The power management control ECU stores this DTC when no signals can be received from the ECUs that are memorized as those connected to the power management bus. When t ...

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Health Check
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