DTC    B1213    Tilt and Telescopic ECU Communication Stop

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DESCRIPTION

  1. This DTC is detected when communication between the multiplex tilt and telescopic ECU and the multiplex network gateway ECU stops for more than 10 seconds.

DTC No.
DTC Detection Condition
Trouble Area
B1213
Multiplex tilt and telescopic ECU communication stops
  1. Multiplex tilt and telescopic ECU
  2. Wire harness

WIRING DIAGRAM


B110989E02


INSPECTION PROCEDURE

HINT:
When "+B of GND short malfunction of communication bus" DTCs (B1214 and B1215) are detected at the same time as "communication stop" DTC B1213, repair the "+B or GND short malfunction of communication bus" DTCs first.

1.INSPECT FUSE (ECU-B No.1)

  1. Remove the ECU-B No.1 fuse from the fusible link block.

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY AND BODY GROUND)


    B111034E01

  1. Disconnect the T4 ECU connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    T4-2 (+B) - Body ground
    		10 to 14 V

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    T4-11 (GND) - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK RESISTANCE OF COMMUNICATION LINE


  1. Disconnect the P19 and G1 ECU connectors.


    B111051E02

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    T4-5 (MPX1) - P19-7 (MPX1)
    		Below 1 Ω
    T4-14 (MPX2) - G1-12 (MPD2)
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU