Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSISUZU2004ASCENDER 2WD L6-4.2LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMTECHNICAL SERVICE BULLETINS
2004 Isuzu Ascender 2WD L6-4.2L
Ignition System: Technical Service Bulletins
2004 Isuzu Ascender 2WD L6-4.2LSECTION Technical Service Bulletins
- Customer Interest
- Ignition System - Runs Rough/Misfire DTC's When Wet
- Ignition System - SES Lamp ON/DTC P0300 Set/Misfire
- Battery - Discharges After Ignition Switch Replacement
- Ignition -MIL ON/A/T Stuck in 3rd Gear/DTC's Set
- A/T - Stuck In 2nd or 3rd Gear/MIL ON/Inst. Panel Inop.
- Ignition System - MIL ON/Misfire DTC's/Rough Idle
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Ignition System - Runs Rough/Misfire DTC's When Wet
- Ignition System - SES Lamp ON/DTC P0300 Set/Misfire
- Battery - Discharges After Ignition Switch Replacement
- Ignition -MIL ON/A/T Stuck in 3rd Gear/DTC's Set
- A/T - Stuck In 2nd or 3rd Gear/MIL ON/Inst. Panel Inop.
- Ignition System - MIL ON/Misfire DTC's/Rough Idle
- Driveability
- Inoperative
- Leaks
- Low, Dead battery
- No shift/Incorrect gear engagement
- Starting problems
- All Technical Service Bulletins
- Ignition System - Runs Rough/Misfire DTC's When Wet
- Ignition System - SES Lamp ON/DTC P0300 Set/Misfire
- Battery - Discharges After Ignition Switch Replacement
- Battery - Intermittent Dead Battery
- Ignition -MIL ON/A/T Stuck in 3rd Gear/DTC's Set
- A/T - Stuck In 2nd or 3rd Gear/MIL ON/Inst. Panel Inop.
- Ignition System - MIL ON/Misfire DTC's/Rough Idle
- Ignition - Can't Remove Key From Ignition Lock
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.