Create a Decision Matrix For Predictive Maintenance

Create a decision matrix that maps the estimated time, maximum cost, and minimum cost of repairs to specific diagnostic trouble codes (DTC). The decision matrix uses the DTC details sent by Mulesoft as input and triggers an expression set that maps each code to the relevant cost and time estimate. The output is sent to Mulesoft by Automotive Cloud and is in turn shared by Car to Cloud to the driver’s human machine interface (HMI).

Required Editions

Available in: Enterprise, Unlimited, and Developer Editions.

User Permissions Needed
To create a decision matrix:	Rule Engine Designer

1. In the App Launcher, find and select Lookup Tables.
2. Click New.
3. Select Decision Matrix.
4. Click Next.
5. For Name, enter DTC Code Map.
6. Select Standard as the type.
7. Save your changes.
8. Go to the Related tab.
9. On the Decision Matrix Versions tab, click New.
10. Enter a name.
11. Save your changes.
12. On the Matrix tab, click Add Column.
    1. For the first column header name, enter the API name of the field in the DTC Mapping custom name that stores the name of a DTC code.
    2. For Type, select Input.
    3. For Data Type, select Text.
13. Click Add Column.
    1. For the second column header name, enter the API name of the field in the DTC Mapping custom name that stores the estimated time.
    2. For Type, select Output.
    3. For Data Type, select Number.
14. Click Add Column.
    1. For the third column header name, enter the API name of the field in the DTC Mapping custom name that stores the maximum cost of a repair.
    2. For Type, select Output.
    3. For Data Type, select Currency.
15. Click Add Column.
    1. For the fourth column header name, enter the API name of the field in the DTC Mapping custom name that stores the minimum cost of a repair.
    2. For Type, select Output.
    3. For Data Type, select Currency.
16. Click Done.
17. Click Save.
18. Click Add Row.
19. Click on a row.
20. Enter the details.
21. Repeat the steps for all the DTC codes that you want to process for predictive maintenance.
22. Click Save.
23. Click Activate.

Example

Neo Motors creates a decision matrix with these values.

DTC Code Name	Estimated Time (in days)	Minimum Repair Cost	Maximum Cost
P0001	0.5	$280	$700
P00002	1	$450	$600
P0003	1.5	$800	$1200