Display Control Unit Circuit Inspection

WARNING: This page is about a different car, the 2006 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of display control unit for damage, bend and loose connection (control unit side and harness side).
OK or NG
- OK : GO TO 2.
- NG : Repair terminal or connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect display control unit connector.

Check resistance between display control unit harness connector terminals.

TERMINAL RESISTANCE CHART

Display control unit connector	Terminal		Resistance (Approx.)
M95	25	26	54 - 66 Ω

Fig 1: Identifying Resistance Between Display Control Unit Harness Connector Terminals

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

OK or NG

OK : Replace display control unit.
NG : Repair harness between display control unit and data link connector.