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Home >> Mazda >> 2006 >> B4000 Base, Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Troubleshooting (Instrumentation/Driver Information) >> Pinpoint Test 3: DTC B1217 - Horn Relay Coil Circuit Failure And DTC B1218 - Horn Relay Circuit Short To Battery (Vehicles Equipped With Remote Keyless Entry [RKE]) >> Possible Causes

Possible Causes

DTC B1217 AND B1218 PINPOINT TEST REFERENCE

PINPOINT TEST 3 DTC B1217 - HORN RELAY COIL CIRCUIT FAILURE AND DTC B1218 - HORN RELAY COIL CIRCUIT SHORT TO BATTERY (VEHICLES EQUIPPED WITH REMOTE KEYLESS ENTRY [RKE])
STEP INSPECTION ACTION
1 CHECK THE POWER LOCKS WITH THE RKE TRANSMITTER
  • Operate the power door locks with the RKE transmitter.
  • Do the door locks operate correctly? 
Yes Go to next step.
No See DOOR LOCK DIAGNOSIS to continue diagnosis of the power locks.
2 CHECK THE HORN OPERATION
  • Operate the horn.
  • Does the horn operate correctly? 
Yes Go to next step.
No See PINPOINT TEST 1: HORN IS INOPERATIVE  .
3 OPERATE THE POWER DOOR LOCKS WITH THE RKE TRANSMITTER
  • Clear the DTCs.
  • Operate the RKE transmitter.
  • Are the DTCs B1217 and B1218 retrieved again? 
Yes Go to next step.
No The system is operating correctly at this time. Repeat the self-test.
4 CHECK THE SJB OPERATION
  • Disconnect all the SJB connectors.
  • Check for:
    • - corrosion
    • - pushed out pins
  • Connect all the SJB connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
Yes Install a new SJB. See SMART JUNCTION BOX (SJB) . Clear the DTCs. Repeat the self-test.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. Clear the DTCs. Repeat the self-test.