Enhanced ignition discharge module for Trionic 7

/ 9-5 (9600) / 2003 / 2. Engine / Trionic T7, 4-cyl / Fault diagnosis, general / Enhanced ignition discharge module for Trionic 7

New T7 software has been developed to allow Tech2 to diagnose the ignition discharge module more accurately. The software also contains an improvement which prolongs the service life of the ignition discharge module. The software was introduced into production (9-5 M03) from Vehicle Identification Number 33041133. The T7 software has also been developed for earlier model years of 9-5 and 9-3 and is available via SPS (TIS2000).

The T7 software has been produced for cars with engine B235 M00-

The diagnosis does not generate any type P diagnostic trouble codes but supplements the normal diagnosis. The type P diagnostic trouble codes always have priority in the fault diagnosis. For this reason the diagnostic trouble codes must be read in the normal way and remedied in accordance with the fault diagnosis description in WIS.

The following diagnostic trouble codes are related to the ignition discharge module:

•

P0327 Knock Sensor Circuit. Low Input, Bank 1.

•

P0332 Knock Sensor Circuit. Low Input, Bank 2.

•

P1310 Ignition Discharge Module. Not Powered, Bank 1.

•

P1320 Ignition Discharge Module. Not Powered, Bank 2.

The following diagnostic trouble codes are also related to soot on the spark plugs:

•

P0340 Camshaft Position Sensor. Malfunction.

•

P1312 Combustion Detection Cyl. 1+2. Open Circuit / Short to B+.

•

P1313 Combustion Detection Bank 1. Open Circuit / Short to B+.

•

P1324 Combustion Detection Cyl. 3+4. Open Circuit / Short to B+.

•

P1334 Combustion Detection Cyl. 3+4. Open Circuit / Short to B+.

If none of the above diagnostic trouble codes are suspected, connect T7 with Tech2 and select " Ignition Discharge Module Diagnose" under the menu " Diagnostic Trouble Codes (DTC)".

If the enhanced diagnosis function is not in the software then text is displayed which states that the function is not supported (SPS programming can later be used to obtain the diagnosis capability). If the diagnosis exists then the value/code for " Current Status", " Failure Status"and " IDM Check Code" are displayed. An information text explains " Current Status" in plain text is displayed in Tech2.

" Current Status"

A number is displayed here which indicates which stage the diagnostic procedure is in. If the number is 130 or lower then no fault has yet been detected in the ignition discharge module.

The following P trouble codes can block diagnosis: P0171, P0172, P0336, P0337, P1171, P1172, P1181, P1182, P1310, P1320 and P1460. Diagnosis is also blocked if the coolant temperature is less than 15°C (59°F). If any of the trouble codes above are found, an ordinary fault diagnosis should be carried out.

" Failure Status"

If " Current Status" indicates a value of 131 or greater (fault indication) during driving then the value will be stored as " Failure Status" during 40 heating cycles. " Failure Status" can be seen as a freezing of a fault detected during earlier driving. The function can be compared to fault handling for the normal OBD diagnostic trouble codes.

" IDM Check Code"

A code is displayed here if a fault has been found. However, " Failure Status" also displays a value. The code contains data from the fault incident as well as identification of the car. The purpose of the code is that it must be enclosed with an ignition discharge module claim.

"Information Text"

Tech2 will display " Current Status" in plain text in this field.

" Current Status"

Value	Meaning
0	The diagnosis has not yet begun during this driving cycle
1-19	Conditions for the diagnosis before starter motor cranking is begun are not fulfilled: 1=P trouble code stored (according to list of ignition cassette trouble codes above) 2= Fuel shut-off 3= Coolant temperature too low 4= Battery voltage too low 5= Number of P trouble codes is 6 or more (applies to all P trouble codes)
20	Conditions for the diagnosis before starter motor cranking are fulfilled:
21-39	The diagnosis is interrupted during starter motor cranking: 21=P trouble code stored (according to list of ignition cassette trouble codes above) 22= Fuel shut-off 23= Coolant temperature too low 24= Battery voltage too low 25= Number of P trouble codes is 6 or more (applies to all P trouble codes) 26= Starter motor cranking interrupted too early
40	The engine has not started. No faults detected in the ignition discharge module. Another fault, e.g. fuel system, is preventing engine start
50	The engine has started. So far no faults detected in the ignition discharge module
51-69	Conditions for the diagnosis before synchronisation are not fulfilled: 51=P trouble code stored (according to list of ignition cassette trouble codes above) 52= Fuel shut-off 53= Coolant temperature too low 54= Battery voltage too low 55= Number of P trouble codes is 6 or more (applies to all P trouble codes)
70	Conditions for the diagnosis before synchronisation are fulfilled. So far no faults detected in the ignition discharge module
71-89	The diagnosis is interrupted during synchronisation: 71=P trouble code stored (according to list of ignition cassette trouble codes above) 72= Fuel shut-off 73= Coolant temperature too low 74= Battery voltage too low 75= Number of P trouble codes is 6 or more (applies to all P trouble codes)
90	The engine is synchronised. So far no faults detected in the ignition discharge module.
91-109	Conditions for the diagnosis after synchronisation are not fulfilled: 91=P trouble code stored (according to list of ignition cassette trouble codes above) 92= Fuel shut-off 93= Coolant temperature too low 94= Battery voltage too low 95= Number of P trouble codes is 6 or more (applies to all P trouble codes) 96= Evaluation of misfiring not yet begun
110	Conditions for the diagnosis after synchronisation are fulfilled. So far no faults detected in the ignition discharge module
111-129	The diagnosis is interrupted after synchronisation: 111=P trouble code stored (according to list of ignition cassette trouble codes above) 112= Fuel shut-off 113= Coolant temperature too low 114= Battery voltage too low 115= Number of P trouble codes is 6 or more (applies to all P trouble codes)
130	All diagnoses processed. So far no faults detected in the ignition discharge module.
131-	Fault detected

" Failure Status", cars with 4-cylinder engine

*Diagnostic procedure marked ()**	1. Replace spark plugs (unless already done) 2. Repeat diagnosis 3. Does the fault code remain? YES: Replace the ignition cassette. NO: the measures have been successful.
Diagnostic trouble code	Fault	Diagnostic procedure
Diagnosis during starter motor cranking
131-134	Erroneous signal from ignition discharge module	Replace ignition discharge module
137-141	Erroneous signal from ignition discharge module	Replace ignition discharge module
144-148	Erroneous signal from ignition discharge module	Replace ignition discharge module
151	Erroneous signal from ignition discharge module	Replace ignition discharge module
152-155	Erroneous signal from ignition discharge module	Replace ignition discharge module
158-162	Erroneous signal from ignition discharge module	Replace ignition discharge module
165-169	Erroneous signal from ignition discharge module	Replace ignition discharge module
172	Erroneous signal from ignition discharge module	Replace ignition discharge module
173	Fuel shut-off status 12	Checking power supply to module
239-242	Erroneous signal from ignition discharge module	Replace ignition discharge module
245-249	Erroneous signal from ignition discharge module	Replace ignition discharge module
252	Erroneous signal from ignition discharge module	Replace ignition discharge module
Diagnosis during synchronisation
181-184	Erroneous signal from ignition discharge module	Replace ignition discharge module
187-190	Erroneous signal from ignition discharge module	Replace ignition discharge module
193-202	Erroneous signal from ignition discharge module	Replace ignition discharge module
Diagnosis after synchronisation
211-215	Erroneous signal from ignition discharge module	Replace ignition discharge module
218-221	Erroneous signal from ignition discharge module	Replace ignition discharge module
224	Erroneous signal from ignition discharge module	Replace ignition discharge module
225-228	Erroneous signal from ignition discharge module	*
233-236	Erroneous signal from ignition discharge module	Replace ignition discharge module
268-271	Erroneous signal from ignition discharge module	Replace ignition discharge module
279-282	Erroneous signal from ignition discharge module	Replace ignition discharge module
289-292	Erroneous signal from ignition discharge module	*
299-302	Erroneous signal from ignition discharge module	Replace ignition discharge module
309-312	Erroneous signal from ignition discharge module	Replace ignition discharge module
319-322	Erroneous signal from ignition discharge module	Replace ignition discharge module
224	Erroneous signal from ignition discharge module	Replace ignition discharge module
231	Erroneous signal from ignition discharge module	*
211	Erroneous signal from ignition discharge module	Replace ignition discharge module
232	Erroneous signal from ignition discharge module	Replace ignition discharge module
274	Erroneous signal from ignition discharge module	Replace ignition discharge module
299-302	Erroneous signal from ignition discharge module	Replace ignition discharge module
309-312	Erroneous signal from ignition discharge module	Replace ignition discharge module
319-322	Erroneous signal from ignition discharge module	Replace ignition discharge module
285	Erroneous signal from ignition discharge module	Replace ignition discharge module
295	Erroneous signal from ignition discharge module	*
305	Erroneous signal from ignition discharge module	Replace ignition discharge module
315	Erroneous signal from ignition discharge module	Replace ignition discharge module
325	Erroneous signal from ignition discharge module	Replace ignition discharge module
278	Erroneous signal from ignition discharge module	Replace ignition discharge module
253	Fuel shut-off status 12	Checking power supply to module

" Failure Status", cars with V6 engines

*Diagnostic procedure marked ()**	1. Replace spark plugs (unless already done) 2. Repeat diagnosis 3. Does the fault code remain? YES: Replace the ignition cassette. NO: the measures have been successful.
Diagnostic trouble code	Fault	Diagnostic procedure
Diagnosis during starter motor cranking
131-172	Erroneous signal from ignition discharge module	Replace ignition discharge module 1 or 2 (front or rear)
207-208	Erroneous signal from ignition discharge module	Replace ignition discharge module 1 or 2 (front or rear)
173	Fuel shut-off status 12	Checking power supply to front and rear module
Diagnosis during synchronisation
181	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
183	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
185	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
187	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
189	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
191	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
193	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
194	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
203	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
182	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
184	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
186	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
188	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
190	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
192	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
195	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
196	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
204	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
197-199	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
205	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
Diagnosis after synchronisation
219	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
221	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
223	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
257	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
226	Erroneous signal from ignition discharge module	* front bank
228	Erroneous signal from ignition discharge module	* front bank
230	Erroneous signal from ignition discharge module	* front bank
260	Erroneous signal from ignition discharge module	* front bank
213	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
215	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
217	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
263	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
234	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
236	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
238	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
266	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
276	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
280	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
282	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
284	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
287	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
290	Erroneous signal from ignition discharge module	* front bank
294	Erroneous signal from ignition discharge module	* front bank
297	Erroneous signal from ignition discharge module	* front bank
300	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
302	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
304	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
307	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
310	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
312	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
314	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
317	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
320	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
322	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
324	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
327	Erroneous signal from ignition discharge module	Replace ignition discharge module front bank
224	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
231	Engine not synchronised, not possible to establish erroneous bank	*1 or 2 (front or rear)
211	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
232	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
274	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
285	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
295	Engine not synchronised, not possible to establish erroneous bank	*1 or 2 (front or rear)
305	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
315	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
325	Engine not synchronised, not possible to establish erroneous bank	Replace ignition discharge module 1 or 2 (front or rear)
258	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
261	Erroneous signal from both ignition discharge modules	* both
264	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
267	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
277	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
278	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
288	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
298	Erroneous signal from both ignition discharge modules	* both
308	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
318	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
328	Erroneous signal from both ignition discharge modules	Replace both ignition discharge modules
218	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
220	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
222	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
256	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
225	Erroneous signal from ignition discharge module	* rear bank
227	Erroneous signal from ignition discharge module	* rear bank
229	Erroneous signal from ignition discharge module	* rear bank
259	Erroneous signal from ignition discharge module	* rear bank
212	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
214	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
216	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
262	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
233	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
235	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
237	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
265	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
275	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
279	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
281	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
283	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
286	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
289	Erroneous signal from ignition discharge module	* rear bank
291	Erroneous signal from ignition discharge module	* rear bank
293	Erroneous signal from ignition discharge module	* rear bank
296	Erroneous signal from ignition discharge module	* rear bank
299	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
301	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
303	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
306	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
309	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
311	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
313	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
316	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
319	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
321	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
323	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank
326	Erroneous signal from ignition discharge module	Replace ignition discharge module rear bank

Diagnostic procedure

If a value is already displayed for " Failure Status" before the engine is started

Note " Failure Status" and " IDM Check Code". Remedy in accordance with the table above. If the car is under warranty, state " IDM Check Code" on the warranty report.

If no value is displayed for " Failure Status" before the engine is started

Run the diagnosis in accordance with the instructions in the "Information Text" field on the Tech2 screen. If a value for " Failure Status" is displayed during starter motor cranking, during the synchronisation phase or after the ignition key has been released back to ON after an attempt at starting, note " Failure Status" and " IDM Check Code".

Remedy in accordance with the table above. If the car is under warranty, state " IDM Check Code" on the warranty report.

Enhanced ignition discharge module for Trionic 7

" Current Status"

" Failure Status"

" IDM Check Code"

"Information Text"

" Current Status"

" Failure Status", cars with 4-cylinder engine

" Failure Status", cars with V6 engines

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