Symptom Tree t084
| Cause | Correction |
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Electronic fault codes active or high counts of inactive fault codes |
Refer to Section TF in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118, for fault code troubleshooting. |
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Fault code warning lamps are burned out |
Check the warning lamps for voltage. Replace the bulbs if necessary. Refer to Procedure 019-046 in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118. |
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Fault code warning lamp circuit is malfunctioning |
Check the fault code warning lamp circuit. Refer to Procedure 019-047 in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118. |
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Battery voltage supply to the electronic control module (ECM) is low, interrupted, or open |
Check the battery connections, the fuses, and the unswitched battery supply circuit. Refer to Procedure 013-009 and Procedures 019-198 and 019-087 in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118. |
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Diagnostic switch or circuit is malfunctioning |
Check the diagnostic switch and circuit. Refer to Procedures 019-027 and 019-028 in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118. |
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Keyswitch circuit is malfunctioning |
Check the vehicle, equipment, or vessel keyswitch circuit. Refer to Procedure 019-064 in the Troubleshooting and Repair Manual, Fuel Systems and Electronics, B5.9G, C8.3G, L10G-III, Bulletin 3666118. |
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Fault code warning lamp is not correct |
Verify that the fault code warning lamp bulb is rated for 12 VDC and 200 mA. Refer to the OEM service manual. |
