Nissan Altima 2007-2012 Service Manual: C1729 vehicle speed signal

Description

The vehicle speed signal is not being detected by 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 the CAN COMM CIRCUIT displayed in the self-diagnosis display? YES >> Refer to WT-19, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

MALFUNCTION CODE NO. 52 (DTC C1729)

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 the “CAN COMM CIRCUIT” displayed in the self-diagnosis display? YES >> Perform trouble diagnosis for CAN communication system. Refer to LAN-25, "CAN System Specification Chart".

NO >> Check combination meter. Refer to MWI-38, "CONSULT-III Function (METER/M&A)".

Special Repair Requirement

Perform preliminary check. Refer to WT-5, "Preliminary Check".

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