DTC Troubleshooting: P1297 (20-1)
|DTC P1297 (20-1):||ELD Circuit Low Voltage|
|1.||Reset the ECM/PCM.|
|2.||Start the engine.|
|3.||Turn on the headlights.|
Is DTC P1297 indicated?
YES - Go to 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the ELD and at the ECM/ PCM.n
|4.||Turn the ignition switch and the headlights OFF.|
|5.||Disconnect the ELD 3P connector.|
|6.||Turn the ignition switch ON (II).|
|7.||Measure voltage between body ground and the ELD 3P connector terminal No. 3.|
Is there about 5 V?
YES - Replace the ELD.n
NO - Go to 8.
|8.||Turn the ignition switch OFF.|
|9.||Disconnect ECM/PCM connector E (31P).|
|10.||Check for continuity between body ground and ECM/PCM connector terminal E15.|
Is there continuity?
YES - Repair short in the wire between the ECM/PCM (E15) and the ELD.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