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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 176 (FUEL SYSTEM & EMISSIONS SYSTEM)GENERAL TROUBLESHOOTING INFORMATIONCKP PATTERN CLEAR/CKP PATTERN LEARNHOW TO TROUBLESHOOT CIRCUITS AT THE PCM CONNECTORS
2008 Chevrolet HHR LT, 2.4 P, Automatic
How to Troubleshoot Circuits at the PCM Connectors
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION How to Troubleshoot Circuits at the PCM Connectors
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The PCM overwrites data and monitors the EVAP system for about 30 minutes after the ignition switch is turned to ACC (I) or to LOCK (0). Jumping the SCS line after turning the ignition switch to ACC (I) or LOCK (0) cancels this function. Disconnecting the PCM during this function, without jumping the SCS line first, can damage the PCM.
- Jump the SCS line with the HDS.
- Disconnect PCM connectors A, B, and C.NOTE: PCM connectors A, B, and C have symbols (A=β‘ , B=Ξ , C=β¦ ) embossed on them for identification.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.