Service check mode Check the navigation ECU

Troubleshoot for each diagnosis.

Ncon

PREPARATION:

Disconnect the navigation ECU connector. CHECK:

Check voltage terminals +B. OK:

Check voltage terminal ACC when turn ignition switch ACC or ON position. OK:

Check continuity terminal GND. OK:

GND: Continuity

CHECK:

Check terminal R, G and B. OK:

R, G, B: See "Naavigation ECU" of "TERMINAL OF ECU".

PREPARATION:

Disconnect the multi display connector. CHECK:

Check voltage terminals +B. OK:

Check voltage terminal ACC when turn ignition switch ACC or ON position. OK:

Check continuity terminal GND. OK:

GND: Continuity

CHECK:

Check terminal R, G and B. OK:

R, G, B: See "multi display" of "TERMINAL OF ECU".

2003-PRT√úS (RM957U)

Replace the multi display.

All of the switches (MAP, Menu, DEST etc.) does not function.

Replace the center cluster module control.

7 Check each switch (A/C switch e.t.c.) of the center cluster module control does not function.

Replace the multi display.

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