|
|
TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–87 f An intermittent or incorrect engine speed signal may Test Description The numbers below refer to the step numbers on the actual selected range. A faulty switch could set a 3. This test checks the torque converter for slippage while in a commanded lockup state. Range Switch Logic Table Range Range Switch Pin g Position A B C P(G) Park ON OFF OFF ON Reverse ON ON OFF OFF Neutral OFF ON OFF ON D4 OFF ON ON OFF D3 ON ON ON ON 2 ON OFF ON OFF L OFF OFF ON ON Illegal OFF OFF OFF OFF Illegal OFF OFF OFF ON DTC P1870 Transmission Component Slipping Step Action Yes No 1 Were you sent here from the “Powertrain On–Board Diagnostic Go to Step 2 Go to OBD System Check Refer to Driveability and Emission in Engine section 2 1. Install the scan tool. NOTE: Before clearing DTC(s), use the scan tool to record “Freeze 3. Record the DTC “Freeze Frame” and “Failure Records”. Does each selected transmission range match the scan tool “TR Go to Step 3 Go to “Range Switch Logic Table” 3 Drive the vehicle in 4th gear while the TCC is engaged. At any time is the “TCC Slip Speed” greater than 130 rpm for 8 Go to System Diagnosis Charts Go to Diagnostic Aids |