INSPECTION PROCEDURE 1. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY (for Standard) (a) When there is a malfunction such as noise from a speaker or no sound at all, replace the speaker with a new one and check that the malfunction disappears. OK: Malfunction disappears. HINT:
2. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY (for 12 Speakers) (a) Measure the resistance according to the value(s) in the table below. Standard resistance:
If the result is not as specified, replace the front No. 2 speaker assembly. Text in Illustration
3. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY (for Standard) (a) Temporarily replace the front No. 4 speaker assembly with a new or normally functioning one. OK: Malfunction disappears. HINT: Connect the connectors to the front No. 4 speaker assembly. 4. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY (for 12 Speakers) (a) Measure the resistance according to the value(s) in the table below. Standard resistance:
If the result is not as specified, replace the front No. 4 speaker assembly. Text in Illustration
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Toyota Tundra Service Manual > Can Communication System: Check Bus 4 Line for Short to +B
DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and termin ...