DTC Troubleshooting: P1213 (11-1)

DTC P1213 (11-1):  IMA Circuit Low Voltage

1.Reset the ECM/PCM.

2.Start the engine, then let it idle for more than 5 seconds.

3.Check for Temporary DTCs or DTCs with the HDS or a scan tool.

Is DTC P1213 indicated?


YES - Go to 4.


NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the IMA and the  ECM/ PCM.n


4.Turn the ignition switch OFF.

5.Disconnect the IMA 3P connector.

6.Turn the ignition switch ON (II).

7.Measure voltage between IMA 3P connector terminals No. 1 and No. 3.

 

Is there about 5 V?


YES - Go to 8.


NO - Go to 14.


8.Turn the ignition switch OFF.

9.Disconnect ECM/PCM connector A (31P).

10.At the wire harness side, check for continuity between IMA 3P connector terminal No. 2 and body ground.

 

Is there continuity?


YES - Repair short in the wire between the ECM/PCM (A31) and the IMA.n


NO - Go to 11.


11.Reconnect the IMA 3P connector and ECM/PCM connector A (31P).

12.Turn the ignition switch ON (II).

13.Measure voltage between ECM/PCM connector terminals A10 and A31.

 

Is there about 0.5-4.5 V?


YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original  ECM/ PCM.n


NO - Replace the IMA.n


14.Measure voltage between ECM/PCM connector terminals A10 and A20.

 

Is there about 5 V?


YES - Repair open in the wire between the ECM/PCM (A20) and the IMA.n


NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original  ECM/ PCM.n