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Home >> Chevrolet >> 2011 >> Corvette ZR-1 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 6L80-E - DTC P0562 Through DTC P0990) >> DTC P0815, P0816, P0826, or P1876 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, obtain access to the automatic transmission manual shift switch left and right electrical connectors. Refer to Manual Shift Auxiliary Position Switch Replacement - Steering Wheel .
  2. Ignition ON, test for 10-13 volts by backprobing terminal 3 on the manual shift switch-left and ground at the battery negative post.
    • If less than the specified value, test for a short to ground or an open/high resistance in the ignition voltage circuit. If the circuit tests normal, replace the BCM.
  3. Ignition OFF, disconnect the automatic transmission manual shift switch-right electrical connector
  4. Ignition ON, test for 10-13 volts at terminal 2 on the manual shift switch-right harness connector and ground at the battery negative post.
    • If less than the specified value, test the ignition voltage circuit from the automatic transmission manual shift switch-left for a short to ground or an open/high resistance. If the circuit test normal, replace the automatic transmission manual shift switch-left.
  5. Ignition OFF, test for infinite resistance between terminal 1 and terminal 2 on the manual shift switch-right, with the switch open.
    • If less than the specified value, replace the automatic transmission manual shift switch-right.
  6. Test for less than 5 ohms between terminal 1 and terminal 2 with the plus switch closed on the manual shift switch-right.
    • If greater than the specified value, replace the automatic transmission manual shift switch-right.
  7. Test for infinite resistance between terminal 2 and terminal 3 on the manual shift switch-right with the switch open.
    • If less than the specified value, replace the automatic transmission manual shift switch-right.
  8. Test for less than 5 ohms between terminal 2 and terminal 3 with the minus switch closed on the manual shift switch-right.
    • If greater than the specified value, replace the automatic transmission manual shift switch-right.
  9. Ignition OFF, disconnect the automatic transmission manual shift switch-left electrical connector.
  10. Test for 8.15-8.35 k ohms between terminal 3 and terminal 5 on the manual shift switch-left.
    • If not within the specified range, replace the automatic transmission manual shift switch-left.
  11. Test for 4.27-4.57 k ohms between terminal 2 and terminal 5 with the plus switch closed on the manual shift switch-left.
    • If not within the specified range, replace the automatic transmission manual shift switch-left.
  12. Test for 1.485-1.515 k ohms between terminal 2 and terminal 5 with the minus switch closed on the manual shift switch-left.
    • If not within the specified range, replace the automatic transmission manual shift switch-left.
  13. Test for less than 5 ohms between terminal 1 and terminal 2 with the plus switch closed on manual shift switch-left.
    • If greater than the specified value, replace the automatic transmission manual shift switch-left.
  14. Test for less than 5 ohms between terminal 2 and terminal 4 with the minus switch closed on the manual shift switch-left.
    • If greater than the specified value, replace the automatic transmission manual shift switch-left.
  15. Ignition OFF, disconnect the X1 connector at the automatic transmission assembly.
  16. Ignition OFF, connect a 3 A fused jumper wire between terminal 3 and terminal 5 at the automatic transmission manual shift switch-left.
  17. Ignition ON, test for 10-13 volts at the harness connector X1 terminal 7.
    • If not within the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the TCM.
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