11/28/2023 0 Comments Torque converter solenoid![]() ![]() If test light does not illuminate, or does not illuminate brightly, repair relay output circuit for open. If test light illuminates brightly, replace transmission control relay. ![]() Using test light connected to ground, check fused transmission control relay output circuit at transmission solenoid connector terminal No. 87 (terminal C5 on AB body) together at transmission control relay connector. 30 (terminal C3 on AB body) and transmission control relay output circuit (terminal No. Using fused jumper wire, jumper fused B+ circuit (terminal No. If resistance is less than 5 ohms, repair relay output circuit for short to ground.ħ. If resistance is 5 ohms or more, go to next step. Measure resistance between ground and fused transmission control relay output circuit at transmission solenoid connector terminal No. If fuse is open, ensure to check for short to ground orĦ. If test light does not illuminate, or does not illuminate brightly, repair circuit for open. If test light illuminates brightly, remove test light and go to next step. Using test light connected to ground, check fused B+ circuit at transmission control relay connector terminal No. Remove transmission control relay from underhood Power Distribution Center ( PDC) or Integrated Power Module (IPM), as applicable. If test light does not illuminate, or does not illuminate brightly, go to next step.ĥ. See REMOVAL & INSTALLATION in appropriate SERVICING article in AUTOMATIC TRANSMISSIONS. If test light illuminates brightly, replace transmission solenoid assembly (internal transmission harness). Inspect connector and terminals for damage. Disconnect transmission solenoid harness connector. If DTC P0743, P0748 and P0753 are not present, go to step 8. If DTC P0743, P0748 and P0753 are present, go to next step. If DTC P1765 is not set, go to next step.ģ. If DTC P1765 is also set, see DTC P1765: TRANS 12-VOLT SUPPLY RELAY CNTRL CIRCUIT. If good trip counter is displayed and displayed count is zero, go to next step.Ģ. If good trip counter for DTC P0743 is not displayed or displayed count is not zero, go to step 16. Transmission control circuit shorted to voltage.ġ. Transmission control relay output circuit shorted to ground. Transmission control relay output circuit open. TCC solenoid control circuit shorted to ground.The following items may be area of concern:įused B+ feed to transmission control circuit open. DTC sets if voltage detected on TCC at PCM does not match desired voltage. DTC P0743: TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITSĬircuit is monitored continuously while ignition is on. ![]()
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