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.
DL7 CHECK THE RESISTANCE OF THE CHT SENSOR
• Ignition OFF.
• CHT Sensor connector connected.
• CHT2 Sensor connector connected.
• PCM connector connected.
• Run the engine until the engine temperature stabilizes.
• Ignition OFF.
• For the CHT2 sensor,
• CHT2 Sensor connector disconnected.
• Measure the resistance between:
( + ) CHT2 Sensor Connector, Component Side | ( - ) CHT2 Sensor Connector, Component Side |
|---|---|
CHT2 - Pin 1 | SIGRTN - Pin 2 |
• For all others,
• CHT Sensor connector disconnected.
• Measure the resistance between:
( + ) CHT Sensor Connector, Component Side | ( - ) CHT Sensor Connector, Component Side |
|---|---|
CHT | SIGRTN |
Is the resistance within specification?
Yes | No |
|---|---|
For the CHT2 sensor, GO to DL8 . For all others, GO to DL9 . | INSTALL a new CHT sensor. REFER to the Workshop Manual Section 303- 14, Electronic Engine Controls. CLEAR the DTCs. REPEAT the self-test. |
DL8 CHECK THE CHT2 SENSOR
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) CHT2 Sensor Connector, Harness Side | ( - ) CHT2 Sensor Connector, Harness Side |
|---|---|
CHT2 - Pin 1 | SIGRTN - Pin 2 |
• Observe the digital multi meter (DMM) for an indication of a concern while shaking, wiggling, and bending the CHT2 circuit between the CHT2 and the PCM. Note that voltage changes suddenly when a concern is detected.
Is a concern present?
Yes | No |
|---|
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.