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DTC P1863: EDS 4 Output Open: Troubleshooting

TROUBLESHOOTING REFERENCE CHART

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD II) System Check.
Is the check completed?		 - Go to Step 2 Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK
2
  1. Install the scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. Select "Actuating" on the scan tool.
  4. Actuate EDS 4 ON/OFF.

Does the EDS 4 change ON/OFF?		 ON/OFF Go to DIAGNOSTIC AIDS Go to Step 3
3
  1. Turn the ignition OFF.
  2. Disconnect the transaxle wiring connector.
  3. Measure the resistance between terminals 5 and 7 of the transaxle wiring connector.

Is the resistance within the values shown?		 TFT 25 °C (77 °F) 6 Ω Go to Step 7 Go to Step 4
4
  1. Remove the oil pan.
  2. Disconnect the wiring connector of EDS 4.
  3. Measure the resistance between terminal 2 of the EDS 4 and terminal 5 of the transaxle connector.
  4. Measure the resistance between terminal 1 of the EDS 4 and terminal 7 of the transaxle connector.

Is the resistance within the values shown?		 0 Ω Go to Step 6 Go to Step 5
5
  1. Repair the circuit (between terminal 2 and terminal 5) for an open.
  2. Repair the circuit (between terminal 1 and terminal 7) for an open.

Is the repair complete?		 - System OK -
6 Replace the EDS 4.
Is the replacement complete?		 - System OK -
7
  1. Disconnect the transaxle wiring connector and TCM connector.
  2. Measure the resistance between terminal 5 of the transaxle wiring connector and terminal C7 of the TCM wiring connector.
  3. Measure the resistance between terminal 7 of the transaxle wiring connector and terminal A3 of the TCM wiring connector.

Is the resistance within the values shown?		 0 Ω Go to Step 9 Go to Step 8
8 Repair the transaxle wiring harness for an open.
Is the repair complete?		 - System OK -
9 Replace the TCM.
Is the replacement complete?		 - Go to Step 10 -
10
  1. After the repair, use a scan tool "clear info" function and road tests the vehicle.
  2. Review the "DTC info".

Has the last test failed or is the current DTC displayed?		 - Begin diagnosis again Repair verified exit DTC chart
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