NOTE: Use a digital multimeter to make all electrical measurements.
PINPOINT TEST A: AUDIO UNIT DISPLAYS NO SVC
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STATES |
DETAILS/RESULTS/ACTIONS |
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A1: CHECK ANTENNA CONNECTION |
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CAUTION: When taking electrical measurements, do not short-circuit the antenna cable terminals with the digital multimeter probes as this will damage the antenna cable and require installation of the antenna cable. |
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1MAKE SURE that all antenna cable connectors are connected. |
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• Are the antenna cable connectors connected? |
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→ Yes |
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Go to A2 |
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→ No |
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CONNECT the antenna connectors. Check that the system is working properly. |
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A2: CHECK ANTENNA CABLE FOR OPEN TERMINATION |
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1Disconnect the antenna connectors.. |
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2Measure the resistance between the upper antenna cable connector and the lower antenna cable connector. |
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• Is the resistance less than 5 ohms? |
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→ Yes |
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INSTALL a new antenna base. Check that the system operates correctly. If the fault persists, INSTALL a new telematics control unit. Check that the system operates correctly. |
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→ No |
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INSTALL new antenna cable. CHECK system for proper operation. |
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PINPOINT TEST B: GPS DISPLAYED ON AUDIO UNIT
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STATES |
DETAILS/RESULTS/ACTIONS |
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B1: CHECK ANTENNA CONNECTION |
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CAUTION: When taking electrical measurements, do not short-circuit the antenna cable terminals with the digital multimeter probes as this will damage the antenna cable and require installation of the antenna cable. |
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1MAKE SURE that all antenna cable connectors are connected. |
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• Are the antenna cable connectors connected? |
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→ Yes |
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Go to B2 |
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→ No |
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CONNECT the antenna connectors. CHECK that the system is working properly. |
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B2: CHECK ANTENNA CABLE FOR OPEN TERMINALS |
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1Disconnect the antenna cable connectors. |
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2Measure the resistance between the upper antenna cable connector and the lower antenna cable connector. |
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• Is the resistance less than 5 ohms? |
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→ Yes |
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Go to B3 |
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→ No |
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INSTALL new antenna cable. CHECK system for proper operation. |
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B3: CHECK VOLTAGE AT ANTENNA BASE |
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1Connect the Lower Antenna Connector. |
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2Measure the voltage between the upper antenna cable connector and ground. |
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• Is the voltage more than 10V? |
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→ Yes |
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INSTALL a new antenna base. CHECK that the system is operating correctly. |
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→ No |
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INSTALL new antenna cable. CHECK system for proper operation. |
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PINPOINT TEST C: SPEEDSIG DISPLAYED ON AUDIO UNIT
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STATES |
DETAILS/RESULTS/ACTIONS |
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C1: CHECK CIRCUIT 15-MD15 (GREEN/BLACK) FOR VOLTAGE |
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1Enter the ON position. |
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2Disconnect the Telematics Control Unit - C521. |
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3Measure the voltage between pin 28 C521 of the telematics control unit, circuit 15-MD15 (green/black), harness side, and ground. |
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• Is the voltage more than 10V? |
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→ Yes |
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Go to C2 |
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→ No |
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REPAIR the electrical circuit. PERFORM the component checks described in this section. |
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C2: CHECK CIRCUIT 8-MD24B (WHITE/GREEN) FOR OPEN CIRCUIT |
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1Enter the OFF position. |
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2Disconnect the Information and Message Center - C63. |
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3Measure the resistance between pin 5 C521 of the telematics control unit, circuit 8-MD24B (white/green), harness side and pin 9 C63 of the information and message centre, circuit 8-MD24B (white/green), harness side. |
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• Is the resistance less than 5 ohms? |
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→ Yes |
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For additional information, see Section 310-03. |
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→ No |
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REPAIR the electrical circuit. PERFORM the component checks described in this section. |
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PINPOINT TEST D: AUDIO UNIT DISPLAYS AIRBAG
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STATES |
DETAILS/RESULTS/ACTIONS |
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D1: CHECK CIRCUIT 15-MD15 (GREEN/BLACK) FOR VOLTAGE |
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1Enter the ON position. |
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2Disconnect the Telematics Control Unit - C521. |
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3Measure the voltage between pin 28 C521 of the telematics control unit, circuit 15-MD15 (green/black), harness side, and ground. |
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• Is the voltage more than 10V? |
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→ Yes |
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Go to D2 |
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→ No |
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Repair the electrical circuit. PERFORM the component tests described in this section. |
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D2: CHECK CIRCUIT 91S-AJ14B (BLACK/GREEN) FOR OPEN CIRCUIT |
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1Enter the OFF position. |
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2Disconnect the Airbag Diagnostic Monitor - C424. |
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WARNING: Before performing any work on the supplemental restraint system and its associated components, the backup battery power source must be disconnected. Failure to follow this instruction may result in unexpected air bag deployment and personal injury. For additional information, refer to Section 501-20A / 501-20B. 3Measure the resistance between pin 19 C521 of the telematics control module, circuit 91S-AJ14B (BK/GN), harness side and pin 1 C424 of the airbag diagnostic monitor, circuit 91S-AJ14B (BK/GN), harness side. |
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• Is the resistance less than 5 ohms? |
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→ Yes |
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For additional information, please refer to Section 501-20A/501-20B. |
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→ No |
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Repair the electrical circuit. PERFORM the component tests described in this section. |
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Element checks
Test call
NOTE: This test is only available if there are no faults or all faults have been corrected. This is indicated by the message SYS OK on the audio unit display when entering Self-Diagnostic Mode.
NOTE: This test must be performed when the vehicle is outside the workshop and there are no large buildings/structures or metal objects in the immediate area, allowing the GPS antenna to receive signals from more than three GPS satellites.
NOTE: To exit the Self-Diagnostic Mode manually, press the MENU button.
1. Enter Self-Diagnostic Mode.
2. Press the SEEK button on the audio unit.
3. While the connection is being established, the words TESTCALL and CALLING will appear on the audio unit display.
4. During the connection, the audio unit display alternately shows TESTCALL and the current signal strength.
5. Once the connection to the Ford Telematics Call Centre is established, the Ford Telematics Operator announces that you have successfully connected to the Ford Telematics Call Centre.
6. After the Ford telematics system operator announces, the connection is terminated and the Self-Diagnostics Mode is automatically exited. The audio unit display shows the message SRV END and the connection time.