DTC P1729: 4x4L Switch Circuit Malfunction
WARNING: This page is about a different variant/trim than selected.
P1729 - 4X4L SWITCH CIRCUIT MALFUNCTION
| Description: | The 4x4L switch is an on/off switch. If the powertrain control module (PCM) does not sense appropriate voltage when the switch is cycled on and off, a DTC sets for mechanical shift on the fly systems. | ||
| Possible Causes: |
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| Diagnostic Aids: | Verify the 4x4L switch cycles on/off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Aviator, Excursion, Expedition, F-Super Duty, Navigator | Refer to FOUR-WHEEL DRIVE SYSTEMS . . | ||
| All others | - | - | GO to TG: 4x4 Low Switch (4X4LSW) And Four Wheel Drive (4WD) Switch STEP TG1. |