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Home >> Oldsmobile >> 1991 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L PFI >> Diagnostic Flow Charts For Codes: 13 To 68 >> Code 41, Cam Sensor Circuit >> Intermittents
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Code 41, Cam Sensor Circuit: Intermittents

If connections and harness are okay, connect a digital volt-ohmmeter (10-megohm) between ground and circuit No. 630 terminal at ECM. monitor DVOM while moving related connectors and wiring harness. Voltage reading will change if failure is induced. This may help isolate malfunction.

Fig 1: Code 41, Schematic, Reatta & Riviera, Cam Sensor Circuit
G91E07490Courtesy of GENERAL MOTORS CORP.
Fig 2: Code 41, Schematic, Toronado & Trofeo, Cam Sensor Circuit
G91G07491Courtesy of GENERAL MOTORS CORP.
Fig 3: Code 41, Flow Chart, All With Type 1 Ignition
G50I14710Courtesy of GENERAL MOTORS CORP.
Fig 4: Code 41, Flow Chart, All With Type 2 Ignition
G50J14711Courtesy of GENERAL MOTORS CORP.