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419-07-9 Satellite Navigation 419-07-9 DIAGNOSIS AND TESTING (Continued) Test Step Result / Action to Take F2 Yes Measure the voltage AUO+, AUO-, MUTE. Repair the audio system. Are the connections and the continuity of the wiring harnesses Repair navigation ECU. and connectors between the navigation and the power amplifier No normal? Inspect the wiring harnesses and connectors. PINPOINT TEST G : THE SCREEN DOES NOT DISPLAY A MAP WHEN THE "I AGREE" BUTTON IS PRESSED (ONLY THE "DISCCAUTION"SCREEN IS SHOWN) Test Step Result / Action to Take G1 Yes Apply the parking brake and turn the ignition switch to ACC or ON. Replace the map disc. Does the same caution screen appear even if actions have been Repair the navigation ECU. taken for the respective caution screen as described in the table No below? Normal PINPOINT TEST H : THE MAP SCREEN TURNS WHITE OR BLUE (THE SWITCHES AND THE VEHICLE’S CURRENT POSITION MARK ARE NOT SHOWN) Test Step Result / Action to Take H1 Yes Does the map appear if the map display scale is set to the widest Correct the vehicle’s current position and range? recheck. No Go to H2 H2 Yes Using a soft cloth, wipe the map disc, and insert the disc in the player. Determine that the condition is normal (the Then, turn the ignition switch from OFF to ON. cause was the dirty disc). Is the system okay? No Replace the map disc. PINPOINT TEST I : THE SCREEN DOES NOT CHANGE TO THE NIGHT SCREEN MODE Test Step Result / Action to Take I1 Yes Is the picture quality adjustment set to the Day Screen mode? The Day Screen mode will not show the Night No Go to I2 G88871 en |