B1247

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: B1247: Tire Pressure Monitor Receiver Communication Stop

DTC B1247 - Tire Pressure Monitor Receiver Communication Stop

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE
NOTICE:
- Turn the ignition switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches, or the doors. If any doors need to be opened in order to check the connectors, open the doors and leave them open.
HINT:
- Operating the ignition switch, any other switches, or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below will help determine the cause of the malfunction.

PROCEDURE

1. CHECK FOR DTC
(a) Check for DTC.
HINT: If the CAN MS bus communication error DTC B2326 is output, troubleshoot for B2326 and check for malfunctions in the CAN MS main bus circuit.

Result:

B -- GO TO DTC CHART (B2326)
A -- Continue to next step.
2. CHECK FOR OPEN IN CAN BUS WIRE (TIRE PRESSURE WARNING ECU BRANCH WIRE)

(a) Disconnect the tire pressure warning ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE TIRE PRESSURE WARNING ECU BRANCH WIRE OR CONNECTOR (CANP, CANN)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - BATTERY AND BODY GROUND)

(a) Disconnect the tire pressure warning ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TIRE PRESSURE WARNING ECU