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 MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 622 (DATA COMMUNICATION SYSTEM)
2006 Isuzu Ascender S, 5.3 M, 4WD
Section 622 (Data Communication System)
2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Section 622 (Data Communication System)
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Data Communications
- Control Module U Code List
- DTC B1000
- DTC B1001
- DTC B1009
- DTC B1016
- DTC C0550
- DTC U0020
- DTC U0073 or U2100
- DTC U0100 - U0299
- Diagnostic Instructions
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC U1500
- DTC U1814
- DTC U2099
- DTC U2103
- DTC U2104
- DTC U2105-U2199 (Except U2142 and U2143)
- Diagnostic Instructions (Except U2142 and U2143)
- DTC Descriptors (Except U2142 and U2143)
- Diagnostic Fault Information (Except U2142 and U2143)
- Circuit/System Description (Except U2142 and U2143)
- Conditions for Running the DTC (Except U2142 and U2143)
- Conditions for Setting the DTC (Except U2142 and U2143)
- Action Taken When the DTC Sets (Except U2142 and U2143)
- Conditions for Clearing the DTC (Except U2142 and U2143)
- Diagnostic Aids (Except U2142 and U2143)
- Reference Information (Except U2142 and U2143)
- Circuit/System Testing (Except U2142 and U2143)
- Repair Procedures (Except U2142 and U2143)
- DTC U2105-U2199 (U2142 or U2143 only)
- Diagnostic Instructions (U2142 or U2143 only)
- DTC Descriptors (U2142 or U2143 only)
- Diagnostic Fault Information (U2142 or U2143 only)
- Circuit/System Description (U2142 or U2143 only)
- Conditions for Running the DTC (U2142 or U2143 only)
- Conditions for Setting the DTC (U2142 or U2143 only)
- Action Taken When the DTC Sets (U2142 or U2143 only)
- Conditions for Clearing the DTC (U2142 or U2143 only)
- Diagnostic Aids (U2142 or U2143 only)
- Reference Information (U2142 or U2143 only)
- Circuit/System Testing (U2142 or U2143 only)
- Repair Procedures (U2142 or U2143 only)
- Symptoms - Data Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Scan Tool Does Not Communicate with Low Speed GMLAN Device
- Data Link References
- Repair Instructions
- Description and Operation
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.