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− − − − − − − − *03 *04 *05 *06 S0X4A82J36100000000FAAT12 + + − − + Display unit buttons do not work YES NO YES NO YES NO YES NO 22-368 Navigation System Symptom Troubleshooting (cont’d) DISPLAY UNIT CONNECTOR B (20P) B (WHT/BLU) ACC (WHT/RED) DISPLAY UNIT CONNECTOR B (20P) GND DISPLAY UNIT CONNECTOR B (20P) DISP BUS ( ) (BLU/GRN) SH DISP BUS DISP BUS ( ) (ORN/BLU) DISPLAY UNIT CONNECTOR B (20P) DISP BUS ( ) (ORN/BLU) DISP BUS ( ) (BLU/GRN) NOTE: • Always check the connectors for poor connections or loose terminals. • Before troubleshooting, get the navigation system anti-theft codes. • After troubleshooting, enter the navigation system anti-theft codes. 1. Turn the ignition switch to ACC (I). 2. Measure the voltage betwen body ground and display unit connector B (20P) terminals No. 1 and Go to step 3. Repair open in the wire between the passenger’s under-dash fuse/relay box and the 3. Check for continuity between display unit connector B (20P) terminal No. 10 and body ground. Go to step 4. Repair the open in the wire between the display unit and body ground (G501). 4. Turn the ignition switch OFF. 5. Disconnect the navigation unit and display unit connectors. 6. Check for continuity between the display unit connector B (20P) terminal No. 14 (for the harness) Replace the affected shielded harness. Go to step 7. 7. Check for continuity between body ground and display unit connector B (20P) terminals No. 5 and There is a short to body ground in the circuit between the display unit and the navigation unit. Go to step 8. Wire side of female terminals Wire side of female terminals Wire side of female terminals Wire side of female terminals Is ther e batter y voltage? Is ther e continuity? Is ther e continuity? Is ther e continuity? 03/07/29 10:28:42 61S0X050_220_0370 |