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Diagnosis Procedure

Regarding Wiring Diagram information, refer to [PREMIUM AUDIO SYSTEM: WIRING DIAGRAM [CREW CAB] ].

DIAGNOSIS PROCEDURE

Step Action YES NO
1  HARNESS CHECK 
  1. Disconnect audio amp. connector B159 and suspect tweeter connector.
G06445588G06445589G06445590Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Check continuity between audio amp. harness connector B159 (A) and suspect tweeter harness connector (B).
G06445588G06445589G06445590Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 3. Check continuity between audio amp. harness connector B159 (A) and ground.
G06445588G06445589G06445590Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Are continuity test results as specified? 		 GO TO 2
  • Check connector housings for disconnected or loose terminals.
  • Repair harness or connector.
2  FRONT TWEETER SIGNAL CHECK 
  1. Connect audio amp. connector B159 and suspect tweeter connector.
G06445591G06445592Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Turn ignition switch to ACC.
  2. 3. Push "POWER" switch.
  3. 4. Check the signal between audio amp. harness connector B159 terminals with SDT or oscilloscope.
G06445591G06445592Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Is audio signal voltage as specified? 		 Replace suspect tweeter. Refer to [FRONT TWEETER: REMOVAL AND INSTALLATION ]. GO TO 3
3  PRE-AMP HARNESS CHECK 
  1. Disconnect audio unit connector M65 and audio amp. connector B159.
G06445593G06445594G06445595Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Check continuity between audio unit harness connector M65 (A) and audio amp. harness connector B159 (B).
G06445593G06445594G06445595Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 3. Check continuity between audio unit harness connector M65 (A) and ground.
G06445593G06445594G06445595Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Are continuity test results as specified? 		 GO TO 4
  • Check connector housings for disconnected or loose terminals.
  • Repair harness or connector.
4  PRE-AMP SIGNAL CHECK 
  1. Connect audio unit connector and audio amp. connector.
G06445596G06445597Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Turn ignition switch ACC.
  2. 3. Push "POWER" switch.
  3. 4. Check the signal between audio unit harness connector M65 terminals with SDT or oscilloscope.
G06445596G06445597Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Are the audio signal voltage readings as specified? 		 Replace audio amp. Refer to [AUDIO AMP: REMOVAL AND INSTALLATION ]. Replace audio unit. Refer to [AUDIO UNIT: REMOVAL AND INSTALLATION ].
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