ATTN: 153 to 173 Swappers...help?

[StereoInstaller1]

Hi.

So I understand that the way to get the ECU to flash codes after a 173 swap is to floor the gas pedal 5 times, rythmically.

I have had a CE light a few times, generally after a few miles of freeway time then restarting. Lots of freeway is usually no issue, but 10 to 15 miles, it lights.

So, I have tried the whole "5 complete pumps" slow, fast, meduim, whatever.

No flashie.

Help a brother out, would ya? Am I having an issue with the TPS or something?

Luke

[James Crivellone]

turn the ignition key to the On position (but dont start it), then: fully depress the accelerator pedal, then fully release it. Repeat the depress,release cycle 5 times fairly quickly, but not too fast. It should be completed in a few seconds. What you are doing here is clicking the wide open throttle switch then the idle switch each 5 times. This signals the Motronic unit to send the fault codes by flashing the Check Engine light. You should see the light flash once then it will start flashing the 4 digit codes. If there are no faults, you should see the 1444 code (and 2444 if you have a 12 cylinder). The codes appear as a series of flashes for each digit. The flashes indicating one digit are about 1 second apart, the next digit appears after a couple second interval. The rest of the fault codes appear in Table 1 below.

DME Control Unit 1211
Air Mass/Volume Sensor 1215
Throttle Potentiometer 1216
Output Stage, Group 1 1218
Output Stage, Group 2 1219
EGO(O2) Sensor 1 1221
EGO(O2) Sensor 2 1212
Lambda Control 1 1222
Lambda Control 2 1213
Coolant Temp. Sensor 1223
Intake Air Temp. Sensor 1224
Knock Sensor 1 1225
Knock Sensor 2 1226
Knock Sensor 3 1227
Knock Sensor 4 1228
Battery Voltage/DME Main Relay 1231
Throttle Idle Switch 1232
Throttle WOT Switch 1233
Speedometer A Signal 1234
A/C Compressor cut off 1237
A/C Compressor 1242
Crankshaft Pulse Sensor 1243
Camshaft Sensor 1244
Intervention AEGS 1245
Ignition Secondary Monitor 1247
Fuel Injector 1 (or group 1) 1251
Fuel Injector 2 (or group 2) 1252
Fuel Injector 3 1253
Fuel Injector 4 1254
Fuel Injector 5 1255
Fuel Injector 6 1256
Fuel Injector 7 1257
Fuel Injector 8 1258
Fuel Pump Relay Control 1261
Idle Speed Actuator 1262
Purge Valve 1263
EGO Heater 1264
Fault Lamp (check engine) 1265
VANOS 1266
Air Pump Relay Control 1267
Ignition Coil 1 1271
Ignition Coil 2 1272
Ignition Coil 3 1273
Ignition Coil 4 1274
Ignition Coil 5 1275
Ignition Coil 6 1276
Ignition Coil 7 1277
Ignition Coil 8 1278
Control Unit Memory Supply 1281
Fault Code Memory 1282
Fuel Injector Output Stage 1283
Knock Control test Pulse 1286
No Failures 1444

[StereoInstaller1]

I have done exactly that about 10 times...no flashie...maybe bad TPS?

Luke

[James Crivellone]

I have done exactly that about 10 times...no flashie...maybe bad TPS?

Luke

Possible, how does the car idle?

[Jean-Claude]

Whoa, James, I had no idea revlimited was yours.

This is oHshiz from [m]. ;)

[StereoInstaller1]

Possible, how does the car idle?

So damn snarly it is hard to tell, but the tach does not bounce.

Do you know what wires are TPS on the ECU?

What spec should I meter for?

Thanks for the input!

Luke

[James Crivellone]

So damn snarly it is hard to tell, but the tach does not bounce.

Do you know what wires are TPS on the ECU?

What spec should I meter for?

Thanks for the input!

Luke

The TPS is just a switch, so just check continuity.

PIN 1 = Brown/Blue = Throttle Closed
PIN 2 = Brown = GND
PIN 3 = Brown/Black = Wide Open Throttle

Thats at the TPS itself, if you want ECU pins then its

PIN 52 = Throttle Closed
PIN 53 = WOT

[StereoInstaller1]

something tells me my TPS is not working properly.

Only continuity, huh? Oh yeah, it is the E36 that uses a rheostat.

Duh.

I will test with my meter soon.

Thanks!

Luke