Knock Sensor Circuit - Manual Update

Number: 91-524-8A
Section: 8A
Date: JAN. 1993
Corporate Bulletin No.: 218120

ASE No.: A6

Subject:
DETONATION (KNOCK) SENSOR CIRCUIT

Model and Year:
1991 CORVETTE

SERVICE UPDATE

The identification of the Electronic Control Module (ECM) Connector D (Brn) for the Knock Sensor (Terminal 20, Circuit 496) is incorrect. It should be identified as Connector B (Red), Terminal 20, Circuit 496.

The following is a revised schematic for the Sequential Fuel Injection: V8 VIN engine code "J" for Section 8A-22-3.

Please update your copies of the 1991 Service Manuals.





Manual Update Page. 8A-22-3.