DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC

CONSULT display description

DTC Detection Condition

Possible cause

C1735

IGN CIRCUIT OPEN

Detected following signals are different for 2 seconds;

Ignition switch ON signal inputted from ignition switch
Ignition relay status signal received from IPDM E/R with CAN communication

Harness or connector (Ignition power supply circuit)
BCM
IPDM E/R

NOTE: BCM may detect that ignition switch is OFF when IGN power supply voltage is low.