Sequential Sportshift A/T Shift Switch Circuit

Sequential Sportshift A/T Shift Switch Circuit Troubleshooting
1. Test-drive the vehicle in the [D4] position, and check whether the transmission shifts up and down normally.
2. Check whether the OBD II scan tool indicates P0753, P0758, P0763 or P1709.
Does the OBD II scan tool indicate any of the codes?
YES-Perform the Troubleshooting Flowchart for the indicated Code(s).
NO-Go to step 3.
3. Turn the ignition switch ON (II).





4. Measure the voltage between PCM connector terminal E8 and body ground, and between E7 and body ground.
Is there about 5 V?
YES-Go to step 5.
NO-Run the DTC Troubleshooting for code P1709.
5. Turn the ignition switch OFF.
6. Remove the center console.
7. Disconnect the A/T shift switch connector.





8. Check for continuity between the No. 4 and No.1 terminals of the A/T shift switch connector while pushing the shift lever toward the " + " mark on the A/T gear position indicator panel; then check for continuity between the No. 5 and No.1 terminals while pulling the shift lever toward the "-" mark.
Is there continuity?
YES-Go to step 9.
NO-Faulty A/T shift switch. Replace the shift lever detent bracket assembly.
9. Connect the A/T shift switch connector.
10. Disconnect the E (12P) connector from the PCM.





11. Check for continuity between PCM connector terminals E8 and ED while pushing the shift lever toward the "+" mark.
Is there continuity with the shift lever pushed toward "+" mark, and no continuity with it released ?
YES-Go to step 12.
NO-Check for an open in the wire between PCM connector terminal E8 and the A/T shift switch connector. If wire is OK, replace the shift lever detent bracket assembly.





12. Check for continuity between PCM connector terminals E7 and E9 while pulling the shift lever toward the "-" mark.
Is there continuity with the shift lever pulled toward "+" mark, and no continuity with it released ?
YES-Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.
NO-Check for an open in the wire between PCM connector terminal E7 and the A/T shift switch connector. If wire is OK, replace the shift lever detent bracket assembly.