Pinpoint tests of the launch system (Focus 1)

A1: CHECKING THE BATTERY

1Test the battery using the FDS 2000. For more information, refer to Section 414-00.

• Is the battery OK?

→ Yes

Go to A2 Proceed to PINPOINT TEST A

→ No

Install a new battery. Check that the system is working properly.

A2: CHECKING THE STARTER RELAY

1Disconnect the Starter Relay.

2Perform a component check for the ISO mini relay. Refer to the wiring diagram for more information.

• Is the relay ok?

→ Yes

Go to A3 Proceed to PINPOINT TEST A

→ No

Install a new starter relay. Check that the system is working properly.

A3: CHECKING THE VOLTAGE SUPPLY TO THE STARTER RELAY CIRCUIT 50-BB17 (GRAY-ORANGE)

1Using a digital multimeter, measure the voltage between pin 3 of the starter relay on the wiring harness side and ground.

• Is the voltage greater than 10V?

→ Yes

Go to A4 Proceed to PINPOINT TEST A

→ No

Repair electrical circuit 50-BB17 (gray-orange). Check the correct operation of the system.

A4: CHECKING ELECTRICAL CIRCUIT 50-BB12 (GRAY) FOR OPEN

1Enter the OFF position.

2Disconnect the C80 Line Connector.

3Using a digital multimeter, measure the resistance between pin 12 of the C80 connector, electrical circuit 50-BB12 (gray), and pin 5 of the starter relay.

• Resistance less than 5 ohms?

→ Yes

Go to A5 Proceed to PINPOINT TEST A

→ No

Repair electrical circuit 50-BB12 (gray). Check the correct operation of the system.

A5: CHECKING THE POWER SUPPLY TO THE STARTER

1Connect the Starter Relay.

2Using a digital multimeter, measure the voltage between pin 30 on the starter side and the positive battery terminal with the ignition switch in position III.

• Voltage less than 0.5V?

→ Yes

If your vehicle has an automatic transaxle, go to A6 Proceed to PINPOINT TEST A

Repair electrical circuit 50-BB12 (gray). Check the correct operation of the system.

→ No

Clean and tighten all positive battery electrical connections. Check for proper system operation. If there is a problem, install a new positive battery cable.

A6: CHECKING THE OPERATION OF ELECTRICAL CIRCUITS 50S-BB12 (GRAY) AND 50-BB14 (GRAY-RED) OF THE GEAR SHIFT MODE SWITCH (AUTOMATIC TRANSMISSION IN THE BLOCK WITH THE DRIVING AXLE)

1Using a digital multimeter, measure the resistance between pin 6, circuit 50S-BB12 (gray), and pin 9, circuit 50-BB14 (gray/red), of the shift mode switch connector C438, on the switch side.

• Resistance less than 5 ohms?

→ Yes

Repair electrical circuits 50S-BB12 (gray) or 50-BB14 (gray-red). Check the correct operation of the system.

→ No

Adjust the shift mode switch. If the problem persists, install a new shift mode sensor.

B1: CHECKING THE STATUS OF THE PATS SYSTEM

1Observe the PATS indicator light.

• Does the indicator light flash when you try to start the engine?

→ Yes

PATS system malfunction. For additional information, refer to Section 419-01A / 419-01B.

→ No

Go to B2 Proceed to PINPOINT TEST B

B2: CHECKING THE OPERATION OF THE STARTER RELAY

1Disconnect the Starter Relay.

2Perform a component check for the ISO mini relay. Refer to the wiring diagram for more information.

• Is the relay ok?

→ Yes

Go to B3 Proceed to PINPOINT TEST B

→ No

Install a new starter relay. Check that the system is working properly.

B3: CHECKING THE BATTERY CONDITION

1Test the battery using the FDS 2000. For more information, refer to Section 414-00.

• Is the battery OK?

→ Yes

Go to B4 Proceed to PINPOINT TEST B

→ No

Install a new battery. Check that the system is working properly.

B4: CHECKING FUSES 10 (10A) AND 8 (30A).

1CHECK Fuse 10 (10A).

2CHECK Fuse 8 (30A).

3Check the condition of fuses 10 (10A) and 8 (30A).

• Are the fuses OK?

→ Yes

Go to B5 Proceed to PINPOINT TEST B

→ No

If necessary, install a new fuse(s). If the fuse(s) fails again, check the electrical circuit for a short circuit.

B5: CHECKING THE SWITCHING POWER SUPPLY TO THE STARTER RELAY

1Using a digital multimeter, measure the voltage between pin 1 of the starter relay, on the wiring harness side, and ground with the ignition switch in position III.

• Is the voltage greater than 10V?

→ Yes

Go to B6 Proceed to PINPOINT TEST B

→ No

Go to B7 Proceed to PINPOINT TEST B

B6: CHECKING PATS CIRCUIT FOR STARTER RELAY 31S-BB16 CIRCUIT

1Enter the OFF position.

2Disconnect C415 PCM.

3Using a digital multimeter, measure the resistance between pin 2 of the starter relay, circuit 31S-BB16 (black/red), and pin 27 of the C415 PCM connector, wiring harness side

• Resistance less than 5 ohms?

→ Yes

PATS system malfunction. For additional information, refer to Section 419-01A / 419-01B.

→ No

Repair electrical circuit 31S-BB16 (black-red). Check the correct operation of the system.

B7: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT 30-BB9 (RED) OF THE IGNITION SWITCH

1Disconnect ignition switch C456.

2Using a digital multimeter, measure the voltage between pin 4 of the ignition switch connector C456, circuit 30-BB9 (red), wiring harness side and ground"

• Is the voltage greater than 10V?

→ Yes

Go to B8 Proceed to PINPOINT TEST B

→ No

Repair electrical circuit 30-BB9 (red). Check for proper system operation. If problem exists, repair or install a new battery junction box.

B8: CHECKING ELECTRICAL CIRCUIT 15-DA1 (GREEN-YELLOW) FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 1 of the ignition switch connector C456, circuit 15-DA1 (green/yellow), and pin 1 of the starter relay.

• Resistance less than 5 ohms?

→ Yes

Install a new ignition switch. Check that the system is working properly.

→ No

Repair electrical circuit 15-DA1 (green-yellow). Check the correct operation of the system.

C1: CHECKING THE STARTER LOAD

1Perform a starter load test. For more information, refer to Starter Load Test in this section..

• Is the starter ok?

→ Yes

Go to C2 Proceed to PINPOINT TEST C

→ No

Install a new starter. Check that the system is working properly.

C2: VOLTAGE DROP CHECK

1Using a digital multimeter, measure the voltage between pin 30 on the starter side and the positive battery terminal with the ignition switch in position III.

• Voltage less than 0.5V?

→ Yes

Go to C3 Proceed to PINPOINT TEST C

→ No

Clean and tighten all positive battery electrical connections. Check for proper system operation. If there is a problem, install a new positive battery cable.

C3: CHECKING THE ELECTRICAL CIRCUIT FOR "GROUND"

1Using a digital multimeter, measure the voltage between the starter housing and the negative battery terminal with the ignition switch in position III.

• Voltage less than 0.5V?

→ Yes

Perform battery and charging system diagnostics. Refer to Section 414-00 for additional information.

→ No

Clean and tighten all negative battery connections, starter mounting hardware, and the ground wire between the body and engine. Check for proper system operation. If a problem persists, install a new battery ground wire.