Observed arrival · 2026-11-15
47HO: diagnostics for the WJ’s 4.7 HO
An owner-built Android diagnostic app for 2002–2004 Jeep Grand Cherokee WJ/WG models with the 4.7 High Output V8.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Owners of 2002–2004 WJ/WG 4.7 HO Grand Cherokees
- Worth noticing
- On its reference car, all 16 bus modules responded; nine returned fault codes, and one car has been tested.
Field notes
The described setup pairs an Android phone or tablet with a Bluetooth ELM327 adapter and communicates over the Chrysler PCI bus. The site reports about 120 values in a drive log and roughly 15 actuator tests, which must be run with the car standing still. Screenshots carry a DEMO DATA label; the reference-car measurements are distinct from those examples.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue