P1298
DTC P1298: ELD Circuit High Voltage1. Do the ECM/PCM Reset Procedure.
2. Start the engine.
3. Turn on the headlights.
Is DTC P1298 indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at C204 (located under the right side of dash), the ELD and the ECM/PCM.
4. Turn the ignition switch and 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.1.
Is there battery voltage?
YES - Go to step 8.
NO - Repair open in the wire between the No.6 ECU (PCM) CRUISE CONTROL (15 A) fuse and the ELD.
8. Check for continuity between the ELD 3P connector terminal No.3 and ECM/PCM connector terminal A30.
Is there continuity?
YES - Go to step 9.
NO - Repair open in the wire between the ECM/PCM (A30) and the ELD.
9. Reconnect the ELD 3P connector.
10. Start the engine and let it to idle.
11. While measuring voltage between ECM/PCM connector terminals A30 and B20, turn the headlights on (low).
Does the voltage drop?
YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.
NO - Replace the ELD.