Is DTC U0155:00 set in the ACM, APIM, FCIM, or GPSM?

AI2 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0155:00

Ignition ON. Using a diagnostic scan tool, clear all Continuous Memory Diagnostic Trouble Codes (CMDTCs). Ignition OFF. Ignition ON. Wait at least 10 seconds. Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Yes	GO to AI3
No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AI3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) FOR BATTERY VOLTAGE OUT-OF-RANGE DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform the IPC self-test.

Are any low or high voltage Diagnostic Trouble Codes (DTCs) recorded in the IPC?

Yes	• For DTC U3003:16, REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes) . See U3003:16. • For DTC U3003:17, REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes) . See U3003:17.
No	GO to AI4

Yes

• For DTC U3003:16, REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes) . See U3003:16.

• For DTC U3003:17, REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes) . See U3003:17.

GO to AI4

AI4 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform the self-test for the following modules:

ACM APIM FCIM GPSM

Are any low or high voltage Diagnostic Trouble Codes (DTCs) recorded in the ACM, APIM, FCIM, or GPSM?

Yes	• For DTC U3003:16, GO to Pinpoint Test AQ • For DTC U3003:17, GO to Pinpoint Test AR
No	GO to AI5

Yes

• For DTC U3003:16, GO to Pinpoint Test AQ

• For DTC U3003:17, GO to Pinpoint Test AR

GO to AI5

AI5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0155:00 SET IN MULTIPLE MODULES

Review the recorded results from the self-test.

Is DTC U0155:00 set in more than one module?

Source reference 4227

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.