P1709
DTC P1709: Problem in Transmission Gear Selection Switch CircuitNOTE: Record all freeze data before you troubleshoot.
1. Check whether DTC P1706 is indicated.
Does the OBD II scan tool indicate code P1706?
YES - Perform the Troubleshooting Flowchart for code P1706. Recheck for code P1709 after troubleshooting.
NO - Go to step 2.
Turn the ignition switch OFF.
3. Remove the shift lever console panel.
4. Disconnect the 8P connector.
5. Turn the ignition switch ON (II).
6. Measure the voltage between the No. 3 terminal of the transmission gear selection switch/park pin switch connector (8P) and body ground.
Is there about 5 V?
YES - Go to step 7.
NO - Repair open or short in the wire between PCM connector terminal D2 and the transmission gear selection switch/park pin switch connector (8P).
7. Measure the voltage between the No. 3 and No. 7 terminals of the transmission gear selection switch/ park pin switch connector (8P).
Is there about 5 V?
YES - Go to step 8.
NO - Repair open in the wire between the No. 7 terminal of the transmission gear selection switch/ park pin switch connector (8P) and ground (G402), or repair poor ground (G402).
8. Measure the voltage between the No. 2 and No. 7 terminals of the transmission gear selection switch/ park pin switch connector (8P), and between the No. 8 and No. 7.
Are there about 5 V?
YES - Go to step 12.
NO - Go to step 9.
9. Turn the ignition switch OFF.
10. Disconnect PCM connector D (17P).
11. Check for continuity between PCM connector terminals D3 and body ground, and between D9 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminals D3 or DO and the transmission gear selection switch/park pin switch connector (8P).
NO - Go to step 12.
12. Check for continuity between the No. 3 and No. 7 terminal at the transmission gear selection switch/ park pin switch connector (8P) when the shift lever is shifted into the M position, and when the shift lever is shifted back to D.
Is there continuity when the shift lever in the M position, and no continuity when the shift lever in D?
YES - Go to step 13.
NO - Replace the transmission gear selection switch.
13. Check for continuity between the No. 8 and No. 7 terminals of the transmission gear selection switch/ park pin switch connector (8P) while shifting the shift lever to shift-up position (marked with + ), and between the No. 2 and No. 7 terminals while shifting to shift-down position (marked with - ), and also check for continuity between these terminals when the shift lever is shifted back to neutral position.
Is there continuity when the shift lever is shifted to shift-up and shift-down positions, and no continuity when the shift lever is shifted back to neutral position?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Replace the transmission gear selection switch.