Fault-Tracing Information
Fault-tracing information
Frozen values and counter for diagnostic trouble codes.
Use the diagnostic trouble codes' frozen values as well as the counters, to determine the driving conditions when the problem was detected the first time and how often the problem has occurred. The values show the problem's current status and how intermittent the problem is. Driving conditions may be, e.g., if the engine was running, what speed the vehicle had, or how long the driving distance was.
Counter
The counters are used to determine the problem's status. For general information about the counters, see: Counters, description Counters, Description
Counter 1 indicates the number of drive cycles without fault since the fault was last validated.
If counter 1 is the same as 0, this means that the fault has been detected in this operating cycle (permanent fault). If no troubleshooting or repair has been performed in the vehicle in this driving cycle, the problem is probably in the vehicle.
If counter 1 is over 0, this indicates that the problem has not been detected in this driving cycle (intermittent problem). The problem has existed earlier but is not active right now.
Then check counter 4. Counter 4 indicates number of driving cycles with problem since the problem was validated for the first time.
If the number of driving cycles with problems is high, this indicates an intermittent recurring problem, which means greater possibility of regenerating the problem in the workshop.
If the number of driving cycles with problems is low, this indicates an intermittent temporary problem, which means small possibility of regenerating the problem.
Hint: Counter 3 indicates number of driving cycles since first time that the problem occurred. If the value for counter 3 is divided by the value for counter 4 , the intensity of the problem is obtained. The higher the value, the higher the problem intensity. A high problem intensity indicates that the malfunction recurs often.
Counter 5 can be used for more exact determination of when the problem occurred. To compare counter 5 for diagnostic trouble codes indicates in which order the diagnostic trouble codes were stored.
5-cyl. non-turbo engines
For model year 1999, only counter 1 and 2 are available.
Frozen values
The frozen values show the driving conditions when the control module detected the problem the first time. Check using the frozen values that the diagnostic trouble code has not been caused accidentally during troubleshooting of the vehicle. If the driving distance is 0 km/miles, this indicates that the problem has occurred at the control modules' start-up of the CAN-net, when reception of a relevant value has not been possible. This also applies to other values that come via the CAN-network. In these cases, counter 5 can be used to determine when the problem was generated.
If the diagnostic trouble code has been caused during this troubleshooting, it may be due to, e.g., disconnected component, too low or high battery voltage, or that some control module has been disconnected.
If the diagnostic trouble code has been stored since before, there has likely been a problem or interference, which has resulted in the control module detecting a problem.
For general information about frozen value, see: Information Information
For information about frozen values.
- Turbo engines and 6-cyl. non-turbo engines: Description of frozen values Me7 Description of Frozen Values ME7
- 5-cyl. non-turbo engines: Frozen values DENSO, description Description of Frozen Values DENSO
Read off the diagnostic trouble code's counter and frozen values by clicking on the symbol for VCT2000. Choose diagnostic trouble code in question.
Continue - DONE
------------------------
DONE - Fault-tracing information
-------------------------------------------------
Checking the throttle position sensor
Check whether the engine control module (ECM) has stored any diagnostic trouble codes that indicate a fault in the throttle position sensor of the throttle unit. If diagnostic trouble code ECM-9150 and/or ECM-9160 are stored, they are to be fault traced first. Otherwise, continue as follows.
Use the diagnostic trouble codes' frozen values as well as the counters, to determine the driving conditions when the problem was detected the first time and how often the problem has occurred. The values show the problem's current status and how intermittent the problem is. If the diagnostic trouble code (DTC) was stored under operating conditions that means external factors, such as low battery voltage during engine start-up, are suspected to be the cause fault-trace and remedy as necessary.
If the trouble code was stored when battery voltage was low and engine speed was close to 0 rpm when the fault occurred, it could indicate that the fault arose when the vehicle was stationary with the ignition on for a long period, thereby draining the battery, or that the fault arose due to battery voltage becoming low when the customer started the engine. This, in turn, indicates that the battery's charging status is not OK. Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.
Download the upgraded software. This software contains several improvements geared toward the throttle unit's throttle position sensor, including improvement of the tolerances for short-term, intermittent disruptions to the throttle position sensor signals. The greatest improvement is that the software can handle a substantially greater difference between throttle position sensors' signals than the previous software.
- Perform test of throttle module's damper position sensor. Click on the VCT2000 symbol to start the test.
Note! Certain types of malfunctions of the electronic throttle module (ETM), related to the two internal throttle position sensors, may be temperature-dependent. To be sure of the result, the test should be repeated a number of times in the temperature range between cold engine (ambient temperature) and warm engine (warm engine compartment, engine and induction system).
If the test indicates that the throttle position sensors are not OK, try a new throttle unit (ETM).
Other information
- Throttle body (electronic throttle module (ETM)), replacing Removal and Replacement
- Identifying upgraded software ECM/ETM Identifying Upgraded Software ECM/ETM
- Checking wiring and terminals Checking Wiring and Terminals
Caution! In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed:
- Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
- Then turn on the ignition and turn it off again.
- Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly.
If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.
Continue - Information
-------------------------------------------------
Information
Information
Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
-------------------------------------------------
Fault-tracing information
For upgraded software, released during year 2006 or later, this diagnostic trouble code is used as an information diagnostic trouble code. It will be stored in case the replacement value throttle shut off is or has been activated. It is always stored as the result of another trouble code, troubleshooting is not required.
Caution! There are individual cases when diagnostic trouble code (DTC) ECM-914F can be the only code stored in the Engine control module (ECM). If the upgraded software, released in 2006 or later, is downloaded and only diagnostic trouble code (DTC) ECM-914F is stored in the Engine control module (ECM), try replacing the throttle unit.
Other information
- Identifying upgraded software ECM/ETM Identifying Upgraded Software ECM/ETM
- Throttle body (electronic throttle module (ETM)), replacing Removal and Replacement
Caution! In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed:
- Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
- Then turn on the ignition and turn it off again.
- Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly.
If this is not done correctly, diagnostic trouble codes may remain even after deletion of diagnostic trouble codes as well as any reconfiguration, despite the problem being fixed.
Continue - Information
-------------------------------------------------
Fault-tracing information
The fault tracing that follows depends on whether the software in the control module is upgraded. The control module's software version can be read out using VIDA vehicle communication.
- Ignition on.
- Read out the control module's software.
Check, using the identification of the upgraded software Engine control module (ECM)/Electronic throttle module (ETM) that the correct software is in the Electronic throttle module (ETM) and the Engine control module (ECM). Identifying upgraded software ECM/ETM Identifying Upgraded Software ECM/ETM
Select one of the following options:
1. The software is not upgraded.
2. The software is upgraded.
1 - Checking the throttle position sensor
2 - Fault-tracing information
-------------------------------------------------