Diagnostic trouble codes.
DTC68: This code indicates that the PCM has detected that a driving component of the automatic transmission is slipping.
DTC68 will set when the throttle is between 0 and 50 percent open, the transmission fluid temperature is between 20-115 deg.C, the torque converter clutch is enabled, D.4 or D.3 gear is selected or indicated and the transmission slip speed is greater than 100 rpm for 10 seconds.
DTC85: This code indicates that the PCM has detected the transmission is slipping.
DTC85 will set when DTC28 is not present, the throttle angle is between 20-100 percent, the TCC is commanded ON, the transmission fluid temperature is between 60-150 deg.C and the engine speed is greater than 450rpm, 4-8 seconds or more when gear range D3 or D4 is selected
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