Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSNISSAN-DATSUN2004ALTIMA S, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSANTI-THEFT SYSTEM - VEHICLE SECURITY (THEFT WARNING) SYSTEMVEHICLE SECURITY (THEFT WARNING) SYSTEMDIAGNOSTIC PROCEDURE 2

2004 Nissan-Datsun Altima S, Automatic

Diagnostic Procedure 2

2004 Nissan-Datsun Altima S, AutomaticSECTION Diagnostic Procedure 2

SECURITY INDICATOR LAMP CHECK

SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT-II
- Check "THEFT IND" in "ACTIVE TEST" mode with CONSULT-II.
  
  Fig 1: Scan Tool Display "Active Test"
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Disconnect BCM harness connector M18.
2. Check voltage between BCM harness connector M18 terminal 55 (G/OR) and ground.
  Battery voltage should exist.
  
  Fig 2: BCM Harness Connector & Ground Voltage Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Security indicator lamp is OK.
2. NG : GO TO 2.
SECURITY INDICATOR LAMP CHECK
Check indicator lamp condition.

Refer to Figure .

OK or NG
1. OK : GO TO 3.
2. NG : Replace indicator lamp.
CHECK POWER SUPPLY CIRCUIT FOR SECURITY INDICATOR LAMP
1. Disconnect security indicator lamp connector.
2. Check voltage between security indicator lamp harness connector M14 terminal 1 (Y/R) and ground.
  Battery voltage should exist.
  
  Fig 3: Security Indicator Lamp Harness Connector & Ground Voltage Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Check harness for open or short between security indicator lamp and BCM.
2. NG : Check the following.
- 10A fuse [No. 19, located in fuse block (J/B)]
- Harness for open or short between security indicator lamp and fuse

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.