Diagnosis Procedure
WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the
Signal Tech II User Guide for additional information.
- Check Intelligent Key relative signal strength
- Confirm vehicle Intelligent Key antenna signal strength
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
- Turn ignition switch OFF.
- Check signal between Intelligent Key unit connector and ground with an oscilloscope.
Connector Item Terminals Condition Signal (V) (Reference value) (+) (-) M164 Intelligent Key unit 15 Ground Ignition switch is pushed. Fig 1: Checking Signal Between Intelligent Key Unit Connector M164 Terminals And Ground Using OscilloscopeCourtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?
YES: Instrument panel area antenna is OK.
NO: GO TO 2
- CHECK INSIDE KEY ANTENNA
- Disconnect Intelligent Key unit connector and instrument panel area antenna connectors.
- Check continuity between Intelligent Key unit harness connector (A) M164 terminals 15, 16 and instrument panel area antenna harness connector (B) M68 terminals 1, 2.
Intelligent Key unit connector Terminals Instrument panel area antenna connector Terminals Continuity A: M164 15 B: M68 1 Yes 16 2 - Check continuity between Intelligent Key unit harness connector (A) M164 terminals 15, 16 and ground.
Item Connector Terminals Continuity Intelligent Key unit A: M164 15 Ground No 16 Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector M70 And Instrument Panel Area Antenna Harness Connector M68 TerminalsCourtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?
YES: GO TO 3
NO: Repair or replace harness between Intelligent Key unit and instrument panel area antenna.
- CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
- Replace instrument panel area antenna. (New antenna or other antenna)
- Connect Intelligent Key unit connector.
- Check signal between Intelligent Key unit connector and ground with oscilloscope.
Connector Item Terminals Condition Signal (V) (Reference value) (+) (-) M164 Intelligent Key unit 15 Ground Ignition switch is pushed. Fig 3: Checking Signal Between Intelligent Key Unit Connector M164 Terminals And Ground Using OscilloscopeIs the inspection result normal?
YES: Replace instrument panel area antenna.
NO: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION ".