Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
DV18 CHECK THE TACM+ AND TACM- CIRCUITS FOR A SHORT TO GROUND
( + ) ETBTACM Connector, Harness Side | ( - ) |
|---|---|
TACM+ | Ground |
TACM- | Ground |
Are the resistances greater than 10K ohms?
Yes | No |
|---|---|
GO to DV19 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
DV19 CHECK THE HARNESS FOR A SHORT TO GND, PWR, ETCREF, AND ETCRTN
• Measure the resistance between:
( + ) ETBTACM Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
TACM+ | PWRGND |
TACM+ | VPWR |
TACM+ | ETCRTN |
TACM+ | ETCREF |
TACM- | PWRGND |
TACM- | ETCRTN |
TACM- | VPWR |
TACM- | ETCREF |
Are the resistances greater than 10K ohms?
Yes | No |
|---|---|
GO to DV20 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
DV20 CHECK FOR TACM HARNESS CIRCUITS SHORTED TOGETHER
• Measure the resistance between:
( + ) ETBTACM Connector, Harness Side | ( - ) ETBTACM Connector, Harness Side |
|---|---|
TACM+ | TACM- |
Is the resistance greater than 10K ohms?
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.