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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–110 Step Action Yes No 3 1 Turn off the ignition. 2 Disconnect connector E-95 from the transmission. N O T E Additional DTCs may set 3 Install Tool No. J 44152 Jumper Harness (20 pins) on to the 4 Turn on the ignition, with the engine off. 5 Using a test lamp, probe between connector E-95 pin 11 and a Does the test lamp illuminate? Go to Step 6 Go to Step 4 4 1 Install Tool No. J44152 on to the transmission connector E-95. 2 Using a multimeter set to measure resistance, probe across Does the multimeter display less than 20 Ω? Go to Step 5 Go to Step 7 5 1 Remove Tool No. J44152 from the transmission. 2 Gain access to the TCC PWM solenoid and the control valve 3 Disconnect the internal connector from the TCC PWM solenoid. 4 Using a multimeter set to measure resistance, probe across the Does the multimeter display less than 20 Ω? Replace the TCC PWM solenoid, refer to 7C4 Automatic Transmission – 4L60E – On-vehicle Servicing. Go to Step 8 Replace the control valve body wiring harness, refer to 7C4 Automatic Transmission – 4L60E – On-vehicle Servicing Go to Step 8 6 Using a multimeter, test between E-95 pin 11 and C-96 pin 14 for a Did you find and correct the condition? Go to Step 8 Go to Step 7 7 Replace the TCM, refer to 7C4 Automatic Transmission – 4L60E – Did you complete the replacement? Go to Step 8 — 8 Perform the following procedure to verify the repair: 1 On Tech 2 select: 2 Follow the instructions on Tech 2 and clear any DTCs. 3 On Tech 2 select: 4 Drive the vehicle in D4 and ensure the TCC Duty Cycle Circuit 5 On Tech 2 select: Has DTC P2763 set? Go to Step 2 Go to Step 9 9 On Tech 2 select: Does Tech 2 display any DTCs you have not diagnosed? Refer to 4.8 Diagnostic Trouble Code List System OK When all diagnosis and repairs are completed, check the system for correct operation. |