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 MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 200 (TIRE PRESSURE MONITORING SYSTEM)SYSTEM DESCRIPTIONTPMS CONTROL UNIT INPUTS AND OUTPUTS AT THE 20P CONNECTOR
2008 Chevrolet HHR LT, 2.4 P, Automatic
TPMS Control Unit Inputs and Outputs at the 20P Connector
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION TPMS Control Unit Inputs and Outputs at the 20P Connector
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.
TERMINAL DESCRIPTION
| Terminal number | Wire color | Terminal sign (Terminal name) | Description | Signal |
|---|---|---|---|---|
| 2 | WHT | CAN H (F-CAN communication signal high) | F-CAN communication circuit | Ignition switch ON (II): pulses |
| 3 | BLK | GND (Ground) | Ground for the TPMS control unit | Less than 0.2 V at all times |
| 7 | BLU | K-LINE (Data link connector) | Communications with the HDS | - |
| 8 | LT BLU | IG1 (Ignition switch 1) | Power source for activating the system | Ignition switch ON (II): battery voltage (about 12 V) |
| Ignition switch in LOCK (0): less than 0.1 V | ||||
| 10 | PNK | + B (Battery positive) | Power source for the TPMS control unit | Battery voltage (about 12 V) at all times |
| 11 | RED | CAN L (F-CAN communication. signal low) | F-CAN communication circuit | Ignition switch ON (II): pulses |
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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.