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Hummer H2For those who like a little more gleam to their Hummer, the H2 offers a similar rugged look as the H1, but as a lower cost, and with more added features, making it almost a massive luxury SUV.
Hi George,
Looking through Rockauto.com the front sensors are cabled, the rear have just connectors, so yes they're different, rear are also expensive!
It might be worth checking the wiring harness as DTC indicates an open or short circuit condition, possibly swap left with right?
However DTC C0191 relates to the Longitudinal Accelerometer device mounted behind the center of the dash, interestingly it also connected to the ECBM (Electronically Controlled Brake Module) so the two faults have the ECBM in common.
It might be worth inspecting the ECBM connector, hopefully it is not a faulty ECBM.
Your pictures also show "SERVICE BRAKE SYSTEM" and also interestingly the Class2 Serial bus also connects here.
Have you had any work done to the brake system recently?
Hi George,
Looking through Rockauto.com the front sensors are cabled, the rear have just connectors, so yes they're different, rear are also expensive!
It might be worth checking the wiring harness as DTC indicates an open or short circuit condition, possibly swap left with right?
However DTC C0191 relates to the Longitudinal Accelerometer device mounted behind the center of the dash, interestingly it also connected to the ECBM (Electronically Controlled Brake Module) so the two faults have the ECBM in common.
It might be worth inspecting the ECBM connector, hopefully it is not a faulty ECBM.
Your pictures also show "SERVICE BRAKE SYSTEM" and also interestingly the Class2 Serial bus also connects here.
Have you had any work done to the brake system recently?
I ordered the right Sensor now, should be arrived tomorrow very fast shipping. Sent on wednesday from US and will be arrived firday in Switzerland.
Also I will check connectors to the ECBM.
The main AS Unit 16-Way connector is the right half of item-1 (C451) in yellow shown below:-
C451 connects the Serial Data bus, the above diagram is hard to visualize, however its a "Top View", in red is the rear tow-hitch, this is a single compressor unit yours will a dual (sorry didn't have a dual diagram)
The 2nd connector C450 and is the main power connector, again both connectors should be sealed (somehow)
The side mirrors are control by the Driver's Door Module, these tend to suffer from water ingress (rain), both DDM & PDM are easy to remove/disconnect without undoing the door panel.
The Class2 Serial Data bus is literally 2 wires that link all modules in parallel all over the vehicle, a the fault could be any module or connector, this is why splice pack SP205 is so useful.
Take care with the Airbag Restraint Module it is physical-position sensitive
Look for any signs of cabin leaks, especially around the left A-Pillar, the aftermarket radio would seem a good candidate but pulling it's fuse may not be enough, hence SP205
The Instrument cluster could be original I mention it because it too could be a fault candidate.
Yes that's the connector, it's worth washing out with switch cleaner/IPA to remove any existing corrosion as much as possible.
Ingress Protection (IP) is hard to achieve for connectors no longer mated, electrical tape might do it, or a polythene bag fitted over the connectors and then electrical-taped to the harness.
What you've done already looks neat and better than being left open to the elements, however the test is "would it stand being submersed if you drove through water?"
Yes that's the connector, it's worth washing out with switch cleaner/IPA to remove any existing corrosion as much as possible.
Ingress Protection (IP) is hard to achieve for connectors no longer mated, electrical tape might do it, or a polythene bag fitted over the connectors and then electrical-taped to the harness.
What you've done already looks neat and better than being left open to the elements, however the test is "would it stand being submersed if you drove through water?"
I cleaned / washed out the connector with switch cleaner and fix it up near the trunk. I don't drive through water only when its raining
very fast shipping. Sent on wednesday from US and will be arrived firday in Switzerland.
