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Example: CAN-H, CAN-L Harness Short Circuit

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying CAN-H, CAN-L Harness Short Circuit
G04879057Courtesy of NISSAN MOTOR CO., U.S.A.
CAN-H, CAN-L Harness Short Circuit

Unit name Symptom
ECM
  • Engine torque limiting is affected, and shift harshness increases.
  • Engine speed drops.
BCM
  • Reverse warning chime does not sound.
  • The front wiper moves under continuous operation mode even though the front wiper switch being in the intermittent position.
  • The room lamp does not turn ON.
  • The engine does not start (if an error or malfunction occurs while turning the ignition switch is OFF.)
  • The steering lock does not release (if an error or malfunction occurs while turning the ignition switch is OFF.)
EPS control unit The steering effort increases.
Combination meter
  • The tachometer and the speedometer do not move.
  • Warning lamps turn ON.
  • Indicator lamps do not turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R When the ignition switch is ON,
  • The headlamps (Lo) turn ON.
  • The cooling fan continues to rotate.
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