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HOMESERVICE MANUALSHONDA2002CIVIC SIREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 180 (TURN SIGNAL/HAZARD FLASHER)TURN SIGNAL/HAZARD RELAY INPUT TEST
2002 Honda Civic Si

Turn Signal/Hazard Relay Input Test

2002 Honda Civic SiSECTION Turn Signal/Hazard Relay Input Test
WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the turn signal/hazard relay (A) from the driver's under-dash fuse/relay box (B).
    Fig 1: Removing Turn Signal/Hazard Relay From Driver's Under-Dash Fuse/Relay Box
    G03706717Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Inspect the relay and fuse/relay box socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
    • If the terminals look OK, go to step 3.
  3. Make these input tests at the fuse/relay box.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the turn signal/hazard relay must be faulty; replace it.
    TURN SIGNAL/HAZARD RELAY INPUT TEST DESCRIPTION

    Cavity Test condition Test: Desired result Possible cause if result is not obtained
    6 Under all conditions Check for voltage to ground: There should be battery voltage.
    • Blown No. 16 (15 A) fuse in the under-hood fuse/relay box
    • Faulty driver's under-dash fuse/relay box
    • An open in the wire
    1 Under all conditions Check for continuity to ground: There should be continuity.
    • Poor ground (G601)
    • Faulty driver's under-dash fuse/relay box
    • An open in the wire
    2 Connect the No. 6 terminal to the No. 2 terminal with a jumper wire. Check the turn signal lights operation:
    The left turn signal lights and indicator should come on.
    • Blown bulb
    • Poor ground (G301, G702)
    • An open in the wire
    3 Connect the No. 6 terminal to the No. 3 terminal with a jumper wire. Check the turn signal lights operation:
    The right turn signal lights and indicator should come on.
    • Blown bulb
    • Poor ground (G201, G701)
    • An open in the wire
    4 Ignition switch ON (II) and turn signal switch in Left position. Check for voltage to ground: There should be about 10 V.
    • Poor ground (G601)
    • Faulty turn signal switch
    • Faulty driver's under-dash fuse/relay box
    • An open in the wire
    • Faulty combination switch control unit'
    • Faulty MICU'
    5 Ignition switch ON (II) and turn signal switch in Right position. Check for voltage to ground: There should be about 10 V.
    4 Hazard warning switch ON Check for voltage to ground: There should be about 10 V.
    • Poor ground (G601)
    • Blown No. 16 (15 A) fuse in the under-hood fuse/relay box
    • Faulty driver's under-dash fuse/relay box
    • Faulty hazard warning switch
    • An open in the wire
    • Faulty MICU
    5
    (1) Go to the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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