C1734

C1734 CONTROL UNIT





Description
An internal malfunction has been detected in the TPMS function of the BCM.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
1. On SELECT DIAG MODE, select the SELF-DIAG RESULT screen.
2. Check display contents on SELF DIAG RESULT screen.
Is C1734 displayed in the self-diagnosis display?
YES - SEE Diagnosis Procedure.
NO - Inspection End.




Diagnosis Procedure
Regarding Wiring Diagram information, [1][2]Electrical Diagrams.
MALFUNCTION CODE NO. 53 (DTC C1734)
1.SELF-DIAGNOSTIC RESULTS
1. On "SELECT DIAG" mode, select the "SELF-DIAG RESULT" screen for BCM.
2. Check display contents on "SELF-DIAG RESULT".
Does self-diagnostic results indicate any DTC other than C1734?
YES - Perform trouble diagnosis for DTC. Testing and Inspection.
NO - GO TO 2.
2.CHECK BCM HARNESS CONNECTORS
Check BCM harness connectors for damage or loose connections.
Are the BCM harness connectors damaged or loose?
YES - Repair or replace damaged parts.
NO - GO TO 3.
3.BCM POWER SUPPLY AND GROUND
Check BCM power supply and ground. Power Supply And Ground Circuit.
Are the power supply and grounds normal?
YES - GO TO 4.
NO - Repair power supply or grounds as necessary.
4.CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER





1. Turn ignition switch "OFF"
2. Disconnect BCM harness connector M18 (A) and tire pressure receiver harness connector M70 (B).
3. Check continuity between BCM harness connector and tire pressure receiver harness connector.





Does continuity exist?
YES - GO TO 5.
NO - Repair circuits as necessary.
5.BCM INPUT/OUTPUT SIGNALS
Check BCM input/output signals. Reference Value.
Are the inputs and outputs normal?
YES - Inspection End.
NO - Replace BCM. Service and Repair.




Special Repair Requirement
Perform preliminary check. Preliminary Check.