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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Manual Transmission - TREMEC 6-Speed (Mg9) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0801, P088C, or P088D >> Component Testing

Component Testing

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Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: M47 Manual Transmission Reverse Gear Blockout Solenoid
  3. NOTE:

    The component's temperature should be 20 to 30°C (68 to 86°F) while testing.

  4. Test for 11 to 15 ohms between the test points: Control terminal 1/A & B+ terminal 2/B
    • If not between 11 and 15 ohms 

      Replace the component: M47 Manual Transmission Reverse Gear Blockout Solenoid

    • Go to next step: If between 11 and 15 ohms 
  5. Test for infinite resistance between the test points: Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component: M47 Manual Transmission Reverse Gear Blockout Solenoid

    • Go to next step: If infinite resistance 
  6. All OK.

Dynamic Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: M47 Manual Transmission Reverse Gear Blockout Solenoid
  3. Connect a 3 A fused jumper wire between the test points: B+ terminal 2/B & 12 V
  4. CAUTION:

    Complete the testing as quickly as possible in order to prevent overheating and damaging the component.

  5. Momentarily connect a jumper wire between the test points: Control terminal 1/A & Ground

    Verify the component produces a clicking sound: M47 Manual Transmission Reverse Gear Blockout Solenoid

    • If a click cannot be heard or felt 

      Replace the component: M47 Manual Transmission Reverse Gear Blockout Solenoid

    • Go to next step: If a click can be heard or felt 
  6. All OK.