ABS (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC 47 IMPROPER CAN COMMUNICATION

DTC DETECTING CONDITION:

CAN communication line is damaged or circuit is shorted.

TROUBLE SYMPTOM:

Tight corner braking phenomenon occurs.

WIRING DIAGRAM:

• LHD model

• RHD model

STEPCHECKYESNO

1.CHECK HARNESS CONNECTOR BETWEEN ABSCM&H/U AND TCM.

1) Turn the ignition switch to OFF.

2) Disconnect the ABSCM&H/U connectors and TCM connectors.

3) Measure the resistance of the harness connector between ABSCM&H/U and TCM.

Connector & terminal

LHD model

(B301) No. 26 — (B55) No. 18:

(B301) No. 11 — (B55) No. 17:

RHD model

(F49) No. 26 — (B55) No. 18:

(F49) No. 11 — (B55) No. 17:

Is the resistance less than 0.5 Ω?

Repair or replace the harness connector between ABSCM&H/U and TCM.

2.CHECK HARNESS CONNECTOR BETWEEN ABSCM&H/U AND TCM FOR GROUND SHORT.

1) Measure the resistance between the ABSCM&H/U connector and chassis ground.

Connector & terminal

LHD model

(B301) No. 26 — Chassis ground:

(B301) No. 11 — Chassis ground:

RHD model

(F49) No. 26 — Chassis ground:

(F49) No. 11 — Chassis ground:

Is the resistance more than 1 MΩ?

Repair or replace the harness connector between ABSCM&H/U and TCM.

3.CHECK HARNESS CONNECTOR BETWEEN ABSCM&H/U AND TCM FOR BATTERY SHORT.

1) Turn the ignition switch to ON.

2) Measure the voltage between ABSCM&H/U connector and chassis ground.

Connector & terminal

LHD model

(B301) No. 26 (+) — Chassis ground (−):

(B301) No. 11 (+) — Chassis ground (−):

RHD model

(F49) No. 26 (+) — Chassis ground (−):

(F49) No. 11 (+) — Chassis ground (−):

Is the voltage less than 1.0 V?

Repair or replace the harness connector between ABSCM&H/U and TCM.

4.CHECK ABSCM&H/U.

1) Turn the ignition switch to OFF.

2) Connect the connector to ABSCM&H/U.

3) Measure the resistance between TCM connector terminals.

Connector & terminal

(B55) No. 17 — (B55) No. 18:

Is the resistance 120±6 Ω?

5.CHECK ABSCM&H/U CONNECTOR FOR POOR CONTACT.

Is there poor contact?

Repair the poor contact of ABSCM&H/U connector.

Replace the ABSCM only.

6.CHECK TCM.

1) Connect the connector to TCM.

2) Disconnect the ABSCM&H/U connectors.

3) Measure the resistance between the ABSCM&H/U connector terminals.

Connector & terminal

LHD model

(B301) No. 11 — No. 26:

RHD model

(F49) No. 11 — No. 26:

Is the resistance 120±6 Ω?

7.CHECK POOR CONTACT OF TCM CONNECTORS.

Is there poor contact?

Repair the poor contact of TCM connector.

Replace the TCM.

8.CHECK DTC DETECTION.

Is DTC 47 detected?

Replace the ABSCM only.

9.CHECK IF TCM SYSTEM DTC P1718 IS DETECTED.

Is DTC P1718 detected?

Replace the TCM.

Replace the ABSCM only.