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.
( + ) HO2S11 Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
HTR11 | HTR11 |
• For HO2S12,
• Measure the resistance between:
( + ) HO2S12 Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
HTR12 | HTR12 |
• For HO2S22,
• Measure the resistance between:
( + ) HO2S22 Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
HTR22 | HTR22 |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to DW15 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
DW15 CHECK THE HO2S HEATER FOR SHORT CIRCUITS
• For HO2S11,
• Measure the resistance between:
( + ) HO2S11 Connector, Harness Side | ( - ) |
|---|---|
HTR11 | Ground |
• Measure the resistance between:
( + ) HO2S11 Connector, Harness Side | ( - ) HO2S11 Connector, Harness Side |
|---|---|
HTR11 | VPWR |
HTR11 | SIGRTN |
HTR11 | HO2S11 |
• For HO2S12,
• Measure the resistance between:
( + ) HO2S12 Connector, Harness Side | ( - ) |
|---|---|
HTR12 | Ground |
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.