DTC Troubleshooting: P1298 (20-2) (5MT)
DTC Troubleshooting: P1298 (20-2)
| DTC P1298 (20-2): | ELD Circuit High Voltage |
| 1. | Reset the ECM/PCM. |
| 2. | Start the engine. |
| 3. | Turn on the headlights. Is DTC P1298 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 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.
 Wire side of female terminalsELD 3P CONNECTORIG1 (YEL)Is there battery voltage? YES - Go to 8. NO - Check the No. 16 (7.5A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the No. 16 (7.5A) fuse and the ELD.n |
| 8. | Turn the ignition switch OFF. |
| 9. | Disconnect the negative cable from the battery. |
| 10. | Connect the ELD 3P connector terminal No. 3 and body ground with a jumper wire.
 ELD 3P CONNECTOR ELD(GRN/RED)Wire side of female terminalsJUMPER WIRE |
| 11. | Disconnect ECM/PCM connector E (31P). |
| 12. | Check for continuity between body ground and ECM/PCM connector terminal E15.
 ECM/PCM CONNECTOR E (31P)Wire side of female terminalsELD (GRN/RED)Is there continuity? YES - Go to 13. NO - Repair open in the wire between the ECM/PCM (E15) and the ELD. |
| 13. | Check for continuity between the ELD 3P connector terminal No. 2 and body ground.
 ELD 3P CONNECTOR GND(BLK)Wire side of female terminals Is there continuity? YES - Go to 14. NO - Repair open in the wire between ELD and G301 (RHD: G201).n |
| 14. | Reconnect the ELD 3P connector and ECM/PCM connector E (31P). |
| 15. | Reconnect the negative cable from the battery. |
| 16. | Start the engine and let it idle. |
| 17. | While measuring voltage between ECM/PCM connector terminals A24 and E15, turn the headlights on (high).
 ECM/PCM CONNECTORSWire side of female terminalsA (31P)E (31P)LG1 (BRN/BLK)ELD (GRN/RED) Does the voltage drop? YES - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/ PCM.n NO - Replace the ELD.n |