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 178 (LIGHTING SYSTEMS)
2006 Isuzu Ascender S, 5.3 M, 4WD
Section 178 (Lighting Systems)
2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Section 178 (Lighting Systems)
WARNING: This page is about a different car, the 2007 Isuzu Ascender, 2007 GMC Envoy, 2007 Chevrolet TrailBlazer, and 2007 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Lighting Systems Component Views
- Lighting Systems Connectors
- Ambient Light Sensor (CJ3)
- Backup Lamp - Left (Z88)
- Backup Lamp - Right (Z88)
- Cargo Lamp
- Center High Mounted Stop Lamp (CHMSL)
- Cornering Lamp - Left (Z88/W49)
- Cornering Lamp - Right (Z88/W49)
- Courtesy/Reading Lamp - Center
- Courtesy/Reading Lamp - Front
- Fog Lamp - LF (Except W49 w/T96)
- Fog Lamp - LF (W49 w/T96)
- Fog Lamp - RF (Except W49 w/T96)
- Fog Lamp - RF (W49 w/T96)
- Headlamp - High Beam - Left
- Headlamp - High Beam - Right
- Headlamp Leveling Actuator - Left (TR6)
- Headlamp Leveling Actuator - Right (TR6)
- Headlamp - Low Beam - Left
- Headlamp - Low Beam - Right
- Headlamp Switch C1
- Headlamp Switch C2
- License Lamp - Left
- License Lamp - Right
- Liftglass Ajar Switch
- Marker Lamp - LF (X88)
- Marker Lamp - LF (Z88/Z89/W49)
- Marker Lamp - RF (X88)
- Marker Lamp - RF (Z88/Z89/W49)
- Park Lamp - LF (W49)
- Park Lamp - RF (W49)
- Park/Turn Signal Lamp - LF (X88)
- Park/Turn Signal Lamp - LF (Z88/Z89)
- Park/Turn Signal Lamp - RF (X88)
- Park/Turn Signal Lamp - RF (Z88/Z89)
- Stop Lamp Switch
- Tail Lamp Circuit Board - Left (w/T84)
- Tail Lamp Circuit Board - Left (w/o T84)
- Tail Lamp Circuit Board - Right (w/T85)
- Tail Lamp Circuit Board - Right (w/o T85)
- Trailer Connector (UY7)
- Turn Signal/Hazard Flasher Module
- Turn Signal Lamp - LF (W49)
- Turn Signal Lamp - RF (W49)
- Turn Signal/Multifunction Switch C1
- Turn Signal/Multifunction Switch C2
- Turn Signal/Multifunction Switch C3
- Turn Signal/Multifunction Switch C4 (K34)
- Vanity Mirror Lamp - Left (DH2)
- Vanity Mirror Lamp - Right (DH2)
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Lighting Systems
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B0951
- DTC B1480
- DTC B2527
- DTC B2530
- DTC B2540
- DTC B2550
- DTC B2575
- DTC B2580
- DTC B2585
- DTC B2610
- DTC B2615
- DTC B2620
- DTC B2625
- DTC B2645
- DTC B3801
- DTC B3802
- Symptoms - Lighting Systems
- Backup Lamps Always On
- Backup Lamps Inoperative
- Clearance Lamps Inoperative
- Cornering Lamps Always On
- Cornering Lamps Inoperative
- Courtesy Lamps Always On
- Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Defeat Inoperative
- Daytime Running Lamps (DRL) Inoperative
- Daytime Running Lamps (DRL) On with Park Brake Applied
- Fog Lamp Indicator Inoperative
- Fog Lamps Always On
- Fog Lamps Inoperative
- Rear Fog Lamps Always On
- Rear Fog Lamps Inoperative
- Hazard Lamps Always On
- Hazard Lamps Inoperative
- Headlamp Switch On Indicator Always On
- Headlamp Switch On Indicator Inoperative
- Headlamps Always On - Low or High Beam (Standard)
- Headlamps Inoperative - High Beams
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - Flash to Pass
- Headlight Leveling Inoperative
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- License Lamps Inoperative
- Marker Lamps Inoperative
- Memory/Heated Seat Switch Backlighting Inoperative
- Park Lamps Inoperative
- Stop Lamps Always On
- Stop Lamps Inoperative
- Tail Lamps Inoperative
- Tail, Marker and License Lamps Always On
- Tail, Marker and License Lamps Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing
- Turn Signal Lamps and/or Indicators Inoperative
- Vanity Mirror Lamp(s) Inoperative
- Repair Instructions
- Stop Lamp Switch Replacement
- Headlamp Housing Panel Replacement (Envoy, Rainier)
- Headlamp Housing Panel Replacement (TrailBlazer)
- Headlamp Switch Replacement
- Ambient Light Sensor Replacement
- Hazard and Turn Signal Flasher Replacement
- Dome and Reading Lamp Bulb Replacement
- Vanity Mirror Lamp Bulb Replacement
- Headlamp Replacement (Envoy)
- Headlamp Replacement (Rainier)
- Headlamp Replacement (TrailBlazer)
- Headlamp Bulb Replacement (Envoy, Rainier)
- Headlamp Bulb Replacement (TrailBlazer)
- Headlamp Aiming
- Front Fog Lamp Replacement (Envoy, TrailBlazer)
- Front Fog Lamp Replacement (Rainier)
- Front Fog Lamp Replacement (TrailBlazer SS)
- Front Fog Lamp Bulb Replacement
- Fog Lamp Aiming
- Park/Turn Signal/Side Marker Lamp Bulb Replacement (Envoy)
- Park/Turn Signal/Side Marker Lamp Bulb Replacement (Rainier)
- Park/Turn Signal/Side Marker Lamp Bulb Replacement (TrailBlazer)
- Cornering Lamp Replacement
- Cornering Lamp Bulb Replacement (Envoy)
- Cornering Lamp Bulb Replacement (Rainier)
- Clearance Lamp Replacement
- High Mounted Stop Lamp Replacement (Envoy, TrailBlazer, Rainier)
- Backup Lamp Replacement (GMC)
- Backup Lamp Bulb Replacement (GMC)
- Rear License Lamp Replacement
- Tail Lamp Replacement (Isuzu)
- Tail Lamp Replacement (TrailBlazer)
- Tail Lamp Bulb Replacement
- Tail Lamp Circuit Board Replacement
- Description and Operation
RENDER: 1.0x
NO RELATED
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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.