Drive Cycle Test (AODE, CD4E)
With transmission gear selector in Drive position, press Transmission Control Switch (TCS). Transmission Control Indicator Light (TCIL) should come on. Moderately accelerate vehicle to 40 MPH for at least 15 seconds (30 seconds above 4000 ft. elevation). Transmission should be in 3rd gear. While holding speed steady, press TCS. TCIL should go off. Accelerate from 40 MPH to 50 MPH. Transmission should shift from 3rd gear to 4th gear. Hold speed steady for 15 seconds. While holding speed steady, lightly apply and release brakes to turn brakelights on. Maintain 50 MPH for about 5 seconds. Brake to a stop and remain stopped for a minimum of 20 seconds with transmission gear selector in Drive position. Repeat procedure 5 times. After completing drive cycle test, perform KOER SELF-TEST and CONTINUOUS MEMORY CODE SELF-TEST. If Code 111 is present, fault cannot be duplicated at this time. If Code 624, 634 or 651 is present, go to next step. If Code 452 is present, go to CIRCUIT TEST DP. If Code 659, 667, 668 or 675 is present, go to step 93). If any other code(s) is present, go to step 92).