Diagnosis Procedure
WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HORN SWITCH
Check horn function with horn switch
Do the horns sound?
YES: Go to 2.
NO: Refer to "WIRING DIAGRAM - HORN - ".
- CHECK HORN RELAY POWER SUPPLY
- Turn ignition switch ON.
- Perform "ACTIVE TEST" ("HORN") using CONSULT-Ill.
- Check voltage between malfunctioning horn relay harness connector and ground.TEST ITEM DESCRIPTION
(+) (-) Test item Voltage (V) (Approx.) Horn relay Connector Terminal Low E11 1 Ground HORN ON Battery voltage → 0 → Battery voltage High E18 3 Other than above Battery voltage Is the inspection result normal?
YES: Go to 4.
NO: Go to 3.
- CHECK HORN RELAY CIRCUIT
- Turn ignition switch OFF.
- Disconnect IPDM E/R connector and horn relay.
- Check continuity between IPDM E/R harness connector and malfunctioning horn relay terminal connector.CONTINUITY SPECIFICATION
IPDM E/R Horn relay Continuity Connector Terminal Connector Terminal E6 44 E11 1 Existed 45 E18 3 - Check continuity between IPDM E/R harness connector and ground.CONTINUITY SPECIFICATION
IPDM E/R Ground Continuity Connector Terminal E6 44 Not existed 45 Is the inspection result normal?
YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
INSPECTION END