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Home >> Suzuki >> 2006 >> Verona Base >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> Diagnostic Information and Procedures >> DTC P1871: EDS Valve Power Supply Circuit Shorted to Power >> DTC Troubleshooting
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DTC Troubleshooting

TEST PROCEDURE - EDS VALVE POWER SUPPLY CIRCUIT SHORTED TO POWER

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. Start engine and allow it to warm up at idle.
  4. Put gear selector in Park and set the parking brake.
  5. Observe "EDS 3, 4, 5, 6's input ampere and output ampere" on the scan tool.

Is the amperes within the values shown?
EDS ampere (0 - 2 A) Go to Diagnostic Aids . Go to Step 3
3
  1. Turn the ignition OFF.
  2. Disconnect the transaxle wiring connector and TCM connector.
  3. Measure the voltage of the transaxle wiring terminal 5.

Is the voltage within the values shown?
11 - 14 V Go to Step 4 Go to Step 5
4 Repair the circuit for a short to power.
Is the action complete?
- System OK -
5
  1. Remove the oil pan.
  2. Disconnect the EDS valve wiring connector.
  3. Turn the ignition ON.
  4. Measure the voltage of the EDS 3 terminal 2.
  5. Measure the voltage of the EDS 4 terminal 2.
  6. Measure the voltage of the EDS 5 terminal 2.
  7. Measure the voltage of the EDS 6 terminal 2.

Is the voltage within the values shown?
11 - 14 V Go to Step 6 Go to Step 7
6 Repair the circuits (power supply lines) for a short to power.
Is the action complete?
- System OK -
7 Replace the TCM.
Is the action complete?
- Go to Step 8 -
8
  1. After the repair, use a scan tool "clear info" function and road test 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.