Code 62, Gear Switch Error: Notes

The 2nd gear switch should be open in 2nd and 3rd gear. The ECM uses this signal to disengage TCC when downshifting.

1. "Scan" testers display switch status in different manners. Refer to manufacturer's operating manual to determine proper status display. Since both switches should be in the same state during this test, tester should display the same status for both the 2nd and 3rd gear switches.
2. Determines whether the switch or signal circuit is open. The circuit can be checked for an open by measuring the voltage at the TCC connector. Reading should be about 12 volts.
3. Because the switches should be grounded in this step, disconnecting the TCC connector should cause the "Scan" tester to change status.
4. The switch status should change when the vehicle shifts into 2nd gear.