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.

Is DTC P1213 indicated?


YES - Go to 3.


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


3.Turn the ignition switch OFF.

4.Disconnect the IMA 3P connector.

5.Turn the ignition switch ON (II).

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

 

Is there about 5 V?


YES - Go to 7.


NO - Go to 15.


7.Turn the ignition switch OFF.

8.Disconnect the negative cable from the battery.

9.Disconnect ECM/PCM connector E (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 (E15) and the IMA.n


NO - Go to 11.


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

12.Reconnect the negative cable to the battery.

13.Turn the ignition switch ON (II).

14.Measure voltage between ECM/PCM connector terminals E4 and E15.

 

Is there about 0.5-4.5 V?


YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n


NO - Replace the IMA.n


15.Measure voltage between ECM/PCM connector terminals E4 and E5.

 

Is there about 5 V?


YES - Repair open in the wire between the  ECM/ PCM (E5) and the IMA.n


NO - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original  ECM/ PCM.n