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NO: Diagnose the combination meter. Refer to GOUP 54Ab, STEP 5. Check combination meter connector C-03 and Q:Is combination meter connector C-03 or audio visual navigation unit connector C-10 in good condition? YES: Go to Step 6. NO: Repair or replace the damaged component(s). Refer to GROUP 00E, Harness Connector Inspection P.00E-2. STEP 6. Check the wiring harness between combination ⦆ Check the communication lines for open circuit. NOTE: Also check intermediate connector C-17 for loose, corroded, or damaged terminals, or terminals pushed back in Q:Is the wiring harness between combination meter connector C-03 (terminal 20) and audio visual navigation unit connector C-10 (terminal 13) in good condition? YES: Go to Step 7. NO: The wiring harness may be damaged or the connector (s) may have loose, corroded or damaged terminals, or STEP 7. Substitute a known good audio visual navigation Q:Is the navigation screen normal? YES: Replace the audio visual navigation unit. NO: Replace the combination meter. Inspection Procedure 6: AM and/or FM station(s) cannot be received. M15410800221USA0000010000 COMMENTS ON TROUBLE SYMPTOM PROBABLE CAUSES ⦆ Malfunctions of roof antenna ⦆ Malfunctions of antenna feeder cable ⦆ Malfunctions of audio visual navigation unit AUDIO AND NAVIGATION SYSTEM 54B-113 DIAGNOSIS |