For those who have the Actron CP9110 scan tool and use it with a '94 or '95 Bonneville:

I recently bought a new (old stock) CP9110 with a GM 9111 cartridge and an OBD-2 cable to hook up my '95 SLE. But I am wondering if they sent me the correct cable? Or if I have some other problem on my data line.

My '95 has an OBD II data link connector (DLC) but still uses the OBDI protocol for communication with the PCM.

Here'* what my cable looks like. Molded into the DLC end, is: OBD II 3.0, on the serial connector end is: ACTRON, and the cable is all of six inches long. The question is: Does this setup work for you guys with 94 and 95 Bonnies?

I get a connection error message whenever I try to read codes or data. The tool, I believe, is OK, as it works swell on my '92 SSEi with the OBDI connector.

This is what happens and what I have checked so far:

Ignition key on - yes

Hookup to vehicle test connector OK - yes

Test connector to computer wiring OK - yes (continuity checks OK)

Computer power/ground circuits OK - Fuse is OK.

Correct engine computer installed? May run eng but not match tool setup -
Dealer says yes, correct PCM, correct PROM.

Here is what I have done so far:

Checked continuity between the serial data line at the white PCM connector (d1, d2) and the data link connector (tan wires) - wire has no open

Checked tan wire for short to ground - no continuity to ground

Checked PCM fuse - OK

Pulled PCM out and recorded PROM ID: BNWB 16215814

Recorded part no from Bar code tag on PCM - 86BNWBM75138EYZX

Dealer says IDs are good for '95 Bonneville, suspects bad connection to scan tool.

The FSM says to disconnect all modules on the serial data line, but I am hoping to avoid that effort in the hopes that some of you have had a similar problem in the past.

Any ideas?

There are two OBD2 cables for that scan tool. Theres a chrysler one and a GM one. Look to see if the pins that are connected match up with the cable. If it dosen't, then you have the chrysler cable. I had the the chrysler cable when I got my scantool so I had to buy the GM one.

I'm not sure I know what you mean by: "pins lining up with the cable," but, the cable does plug right into the connector under the steering wheel.

edit: OK, I get it. I'll check to see if the sockets on the DLC that are used, line up with the pins on the OBDII connector.

edit 2: Yep, there is a pin on the cable connector for every socket in the DLC connector. (Actually a lot more pins than active sockets.)