Vehicle Speed Signal Check for NAVI Control Unit

Does speedometer is operated normally?

YES or NO

1. YES: GO TO 2.
2. NO: Check combination meter trouble diagnosis. Refer to DIAGNOSIS FLOW .

1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and unified meter and A/C amp. connector.
3. Check continuity between NAVI control unit harness connector B207 terminal 28 (GY) and unified meter and A/C amp. harness connector M56 terminal 26 (R/G).

   28-26: Continuity should exist. 

4. Check continuity between NAVI control unit harness connector B207 terminal 28 (GY) and ground.

   28 - Ground: Continuity should not exist. 

   Fig 1: Checking Continuity Between NAVI Control Unit Harness Connector Terminal And Unified Meter And A/C Amp Harness Connector Terminal

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

1. OK: GO TO 3.
2. NG: Repair harness or connector.

1. Connect unified meter and A/C amp. connector.
2. Start engine.
3. Drive vehicle at a constant speed.
4. Check signal between NAVI control unit harness connector B207 terminal 28 (GY) and ground with CONSULT-II or oscilloscope.

   28 - Ground: Refer to  TERMINALS AND REFERENCE VALUE FOR NAVI CONTROL UNIT  .

   Fig 2: Checking Signal Between NAVI Control Unit Harness Connector Terminal And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

1. OK: INSPECTION END
2. NG: Check combination meter system. Refer to VEHICLE SPEED SIGNAL INSPECTION .