Retrieving Trouble Codes

1992 Chevrolet Corvette Base, 2D Coupe, StandardSECTION Retrieving Trouble Codes
NOTE: Assembly Line Diagnostic Connector Link (ALDL) connector is located below left side of instrument panel and is protected by plastic cover labeled DIAGNOSTIC CONNECTOR.
  1. With ignition off, ground terminal "C" (Light Green wire) of Assembly Line Diagnostic Link (ALDL). See Fig 1 .
    Fig 1: Locating ALDL Connector
    G91B11826Courtesy of GENERAL MOTORS CORP.
  2. Turn ignition on. Note SERVICE RIDE CONTROL indicator. A 2-digit trouble code will flash. A digit is read by counting number of flashes occurring within a half second. Second digit occurs approximately one second after first digit.
  3. Each trouble code repeats 3 times before next trouble code displays, with a 3 second pause between each trouble code. Trouble codes display as long as ALDL is grounded.
  4. Trouble code display starts by displaying Code 12 three times, indicating system is capable of storing trouble codes. If trouble codes cannot be displayed, see TROUBLE CODES CANNOT BE DISPLAYED TESTΒ  under TESTING & DIAGNOSIS.
  5. Different trouble codes will be obtained to indicate different system failures. See TROUBLE CODE IDENTIFICATIONΒ  table. Trouble codes must be cleared after system components are serviced. See CLEARING TROUBLE CODESΒ  under TROUBLE CODES.
TROUBLE CODE IDENTIFICATION

Code Definition
12 Start Of Trouble Code Sequence
13 Left Rear Inoperative
14 Right Front Inoperative
21 Left Front Inoperative
22 Right Rear Inoperative
23 (1) Loss Of Speed Sensor Signal
31 Left Front Out Of Position
32 Right Front Out Of Position
33 Left Rear Out Of Position
34 Right Rear Out Of Position
41 (2) SRC Switch Shorted To Battery Voltage
42 (3) SRC Switch Contacts Open
43 (4) SRC Switch Open Circuit
(1) Code 23 will set if ignition is cycled on/off 3 times without driving vehicle. SRC indicator light will go out when vehicle is driven. Code will remain in history and must be cleared to prevent misdiagnosis.
(2) Code 41 will set if SRC control module senses short to ground at terminal D11 (Pink/Black wire) of SRC control module.
(3) Code 42 will set if poor connection exists at SRC switch terminals or SRC control module senses open contact in switch.
(4) Code 43 will set if SRC control module senses open circuit at terminal D11 (Pink/Black wire) of SRC control module.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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