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Home >> Chevrolet >> 1995 >> Corvette Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM/Pcm Code Charts >> Code 84, 2ND To 3RD Gear BLOCKOUT Relay - M/T >> Test Description

Test Description

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Tech 1 will energize circuit for 5 seconds.
  2. Detects a partially shorted coil which would cause excessive current flow. Leave circuit energized for 2 minutes to allow coil to warm. Coil may then open, causing amperage to drop to zero.
  3. Remaining checks will identify a circuit problem that has caused an excessive current flow or inoperative solenoid.
Fig 1: Code 84 Schematic (Corvette With M/T) 2nd To 3rd Gear Blockout Relay
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Fig 2: Code 84 Diagnostic Flow Chart (Corvette With M/T) 2nd To 3rd Gear Blockout Relay
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