( TL19E2AK72100092185FAAT00 )

DTC Troubleshooting: P2185 (192)

DTC P2185:
ECT Sensor 2 Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch to ON (II).

1. Check ECT SENSOR 2 in the DATA LIST with the HDS.

Is about −40 °C (−40 °F) or less, or 4.90 V or more indicated?

YES | - | Go to Step 3 .
NO | - | Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 2 and the ECM/PCM.■

1. Turn the ignition switch to LOCK (0).

1. Disconnect ECT sensor 2 2P connector.

1. Connect ECT sensor 2 2P connector terminals No. 1 and No. 2 with a jumper wire.

1. Turn the ignition switch to ON (II).

1. Check ECT SENSOR 2 in the DATA LIST with the HDS.

Is about −40 °C (−40 °F) or less, or 4.90 V or more indicated?

YES | - | Go to Step 8 .
NO | - | Go to Step 20 .

1. Turn the ignition switch to LOCK (0).

1. Remove the jumper wire from ECT sensor 2 2P connector.

1. Turn the ignition switch to ON (II).

1. Measure the voltage between ECT sensor 2 2P connector terminal No. 1 and body ground.

Is there about 5 V?

YES | - | Go to Step 12 .
NO | - | Go to Step 16 .

1. Turn the ignition switch to LOCK (0).

1. Jump the SCS line with the HDS.

1. Disconnect ECM/PCM connector A (44P).

1. Check for continuity between ECT sensor 2 2P connector terminal No. 2 and ECM/PCM connector terminal A9.

Is there continuity?

YES | - | Go to Step 27 .
NO | - | Repair open in the wire between the ECM/PCM (A9) and ECT sensor 2, then go to Step 22 .

1. Turn the ignition switch to LOCK (0).

1. Jump the SCS line with the HDS.

1. Disconnect ECM/PCM connector A (44P).

1. Check for continuity between ECT sensor 2 2P connector terminal No. 1 and ECM/PCM connector terminal A33.

Is there continuity?

YES | - | Go to Step 27 .
NO | - | Repair open in the wire between the ECM/PCM (A33) and ECT sensor 2, then go to Step 22 .

1. Turn the ignition switch to LOCK (0).

1. Replace ECT sensor 2.

1. Reconnect all connectors.

1. Turn the ignition switch to ON (II).

1. Reset the ECM/PCM with the HDS.

1. Do the ECM/PCM idle learn procedure.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2185 indicated?

YES | - | Check for poor connections or loose terminals at ECT sensor 2 and the ECM/PCM, then go to Step 1 .
NO | - | Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■

1. Reconnect all connectors.

1. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2185 indicated?

YES | - | Check for poor connections or loose terminals at ECT sensor 2 and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to Step 1 .
NO | - | If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■