Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJC0
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15A8; Telematics Transceiver Malfunction; 2016 - 2020 MY Sienna [12/2015 -        ]

DTC

B15A8

Telematics Transceiver Malfunction

DESCRIPTION

This DTC is set when an error in the EEPROM or PLL IC is detected on the DCM (Telematics Transceiver) self-check. The EEPROM (Electrically Erasable Programmable Read-Only Memory) stores the various data to operate the Safety Connect system. The PLL IC (Phase-Locked Loop Integrated Circuit) oscillates telephone radio frequency.

DTC No.

DTC Detection Condition

Trouble Area

B15A8

Error in EEPROM or PLL IC is detected.

DCM (Telematics Transceiver)

CAUTION / NOTICE / HINT

NOTICE:

Regardless of whether DTC B15A8 has been output as a present DTC, the DCM (Telematics Transceiver) should be replaced.

PROCEDURE

1.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver) (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; CELLULAR COMMUNICATION: MAYDAY ECU: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; CELLULAR COMMUNICATION: MAYDAY ECU: REMOVAL ).

NOTICE:

  • The ignition switch must be off.
  • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DCM ACTIVATION 2018 - 2020 MY Sienna [11/2017 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DCM ACTIVATION )