Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM10000000199LC
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15C6; Ignition Switch Signal Malfunction; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

B15C6

Ignition Switch Signal Malfunction

DESCRIPTION

If vehicle movement (10 km/h (6 mph) or more for 10 seconds) is detected based on the location data sent from the radio and display receiver assembly even when the telematics transceiver detects that the ignition switch is off, this DTC will be stored.

DTC No.

DTC Detection Condition

Trouble Area

B15C6

IG signal error
  • Wire harness or connector
  • Telematics transceiver

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Click here 2016 - 2020 MY Sienna [12/2015 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

(b) Recheck for DTCs and check that no DTCs are output.

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER POWER SOURCE)

(a) Disconnect the D73 telematics transceiver connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

H73-4 (E) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

H73-7 (IG2) - Body ground

Engine switch on (IG)

11 to 14 V
OK

REPLACE DCM (TELEMATICS TRANSCEIVER)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR