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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 160 (IMA SYSTEM)SYSTEM DESCRIPTIONMCM INPUTS AND OUTPUTS AT CONNECTOR C (22P)
2008 Chevrolet HHR LT, 2.4 P, Automatic
MCM Inputs and Outputs at Connector C (22P)
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION MCM Inputs and Outputs at Connector C (22P)
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.
MCM INPUTS AND OUTPUTS AT CONNECTOR C TERMINAL REFERENCE
| Terminal number | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | GRN/YEL | VCCIU (U PHASE MOTOR CURRENT SENSOR VOLTAGE) | U phase motor current sensor power | With ignition switch ON (II): about 5 V With ignition switch OFF: about 0 V |
| 2 | WHT/BLK | IUPH (I. U. PHASE) | U phase motor current sensor signal input | With ignition switch ON (II) and engine stopped: about 2.5 V |
| 3 | BLU | SGIU (U PHASE MOTOR CURRENT SENSOR GROUND) | U phase motor current sensor ground | Less than 0.1 V at all times |
| 6 | YEL/BLU | WH (W PHASE HIGH SIDE) | W phase high side inverter gate drive signal output | With engine running: pulses |
| 7 | WHT | VH (V PHASE HIGH SIDE) | V phase high side inverter gate drive signal output | With engine running: pulses |
| 8 | BLU/YEL | VCCIV (V PHASE MOTOR CURRENT SENSOR VOLTAGE) | V phase motor current sensor power | With ignition switch ON (II): about 5 V With ignition switch OFF: about 0 V |
| 9 | RED | IVPH (I. V. PHASE) | V phase motor current sensor signal input | With ignition switch ON (II) and engine stopped: about 2.5 V |
| 11 | GRN | SGIV (V PHASE MOTOR CURRENT SENSOR GROUND) | V phase motor current sensor ground | Less than 0.1 V at all times |
| 14 | RED/BLU | WL (W PHASE LOW SIDE) | W phase low side inverter gate drive signal output | With engine running: pulses |
| 15 | RED/YEL | UL (U PHASE LOW SIDE) | U phase low side inverter gate drive signal output | With engine running: pulses |
| 16 | YEL | VCCIW (W PHASE MOTOR CURRENT SENSOR VOLTAGE) | W phase motor current sensor power | With ignition switch ON (II): about 5 V With ignition switch OFF: about 0 V |
| 17 | GRN/RED | IWPH (I. W. PHASE) | W phase motor current sensor signal input | With ignition switch ON (II) and engine stopped: about 2.5 V |
| 19 | BRN | SGIW (W PHASE MOTOR CURRENT SENSOR GROUND) | W phase motor current sensor ground | Less than 0.1 V at all times |
| 20 | BLU/RED | IPUA (INTELLIGENT POWER UNIT A) | IPU serial signal input | With engine running: pulses |
| 21 | YEL/RED | VL (V PHASE LOW SIDE) | V phase low side inverter gate drive signal output | With engine running: pulses |
| 22 | BLU/BLK | UH (U PHASE HIGH SIDE) | U phase high side inverter gate drive signal output | With engine running: pulses |
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.