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HOMESERVICE MANUALSCHEVROLET1986CAVALIER RS, 2D HATCHBACK, 2.8 W, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEM2.0L TBI TESTS W/CODESECM TROUBLE CODE DEFINITIONS
1986 Chevrolet Cavalier RS, 2D Hatchback, 2.8 W, Automatic

ECM Trouble Code Definitions

1986 Chevrolet Cavalier RS, 2D Hatchback, 2.8 W, AutomaticSECTION ECM Trouble Code Definitions
ECM TROUBLE CODE DEFINITION (2.0L TBI)

Code No. Circuit Affected
12 (1) No RPM reference pulse.
13 Open oxygen sensor circuit.
14 Coolant sensor circuit shorted.
15 Coolant sensor circuit open.
21 TPS signal voltage high.
22 TPS signal voltage low.
24 VSS circuit.
33 MAP sensor voltage high.
34 MAP sensor signal voltage low.
42 EST circuit open or grounded.
44 Lean oxygen sensor value.
45 Rich oxygen sensor value.
51 Faulty PROM, MEM-CAL or ECM.
52 Faulty/missing CALPAC or MEM-CAL.
54 Fuel pump voltage low.
55 Faulty ECM.
(1) Code "12" should be displayed only when no reference pulses are received by ECM (engine not running).
NOTE: Trouble code charts should only be used if "SERVICE ENGINE SOON" light is illuminated (indicating a current problem exists). Exceptions are Code 13, 15, 24, 44 and 45 charts, which may be used to help diagnose intermittent codes.
RENDER: 1.0x

NO RELATED

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