C1734

C1734 CONTROL UNIT

Control Unit

MALFUNCTION CODE NO. 53

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.

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. Refer to BCS-36, "Diagnosis Procedure". 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. Refer to BCS-41, "Reference Value". ECU Diagnosis
Are the inputs and outputs normal?
YES >> Inspection End.
NO >> Replace BCM.