Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | 1 | 1 | - | - |
| Left Side Step 10-Volt Reference | B051C 02 | B051C 29 | B051C 01 | - |
| Right Side Step 10-Volt Reference | B051C 02 | B051D 29 | B051C 01 | - |
| Left Position Sensor Signal | B051C 02 | B051C 29 | 1 | B051C 22 |
| Right Position Sensor Signal | B051C 02 | B051D 29 | 1 | B051D 22 |
| Disable Switch Signal | 1 | 2 | - | - |
| Left Motor Extend Control | B051A 02 | B051A 04 | B051A 01 | - |
| Left Motor Retract Control | B051A 02 | B051A 04 | B051A 01 | - |
| Right Motor Extend Control | B051B 02 | B051B 04 | B051B 01 | - |
| Right Motor Retract Control | B051B 02 | B051B 04 | B051B 01 | - |
| Left Position Sensor Low Reference | - | B051C 29 | - | - |
| Right Position Sensor Low Reference | - | B051D 29 | - | - |
| Ground | - | 1 | - | - |
| 1. Assist Steps Inoperative 2. Disable Switch Inoperative |
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