DISPLAY UNIT : Diagnosis Procedure
WARNING: This page is about a different car, the 2008 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK POWER SUPPLY AND GROUND CIRCUIT FOR DISPLAY CONTROL UNIT
- Check power supply and ground circuit for display control unit. Refer to , "DISPLAY CONTROL UNIT : DIAGNOSIS PROCEDURE ".
Did the power/ground supply check good?
Yes: GO TO 2.
No: Repair malfunctioning part.
- CHECK POWER SUPPLY CIRCUIT FOR DISPLAY UNIT
- Disconnect display unit connector M93.
- Turn ignition switch ON.
- Check voltage between display unit harness connector M93 terminals 2, 3 and ground.
Approx. 9V
Courtesy of NISSAN MOTOR CO., U.S.A.
Are voltage readings as specified?
Yes: GO TO 4.
No: GO TO 3.
- CHECK HARNESS
- Turn ignition switch OFF.
- Disconnect display control unit connector M94.
- Check continuity between display control unit harness connector M94 terminals 2, 4 and display unit harness connector M93 terminals 2, 3.TERMINAL CONTINUITY CHART
Terminals Continuity Display control unit Display unit Connector Terminal Connector Terminal M94 2 M93 2 Yes 4 3 - Check continuity between display unit connector M93 and ground.
TERMINAL CONTINUITY CHARTTerminals Continuity Display unit - Connector Terminal M93 2 Ground No 3 Courtesy of NISSAN MOTOR CO., U.S.A.
Are continuity test results as specified?
Yes: Replace display control unit. Refer to , "REMOVAL AND INSTALLATION ".
No: Repair harness.
- CHECK GROUND CIRCUIT
Check continuity between display unit and ground as follows.
1.
TERMINAL CONTINUITY CHARTTerminals Ignition switch Continuity Connector Terminal - M93 1 Ground OFF Yes Is continuity present?
Yes: Inspection End.
No: Repair harness.