Pinpoint tests of external controls (Focus 1)

A1: CHECKING THE SWITCHING OF THE STOP LIGHTS.

1Turn on the ignition. Press the brake pedal.

• Are the brake lights on?

→ Yes

Go to A3

→ No

Go to A2

A2: CHECKING THE CJB 54V FUSE.

1Enter the OFF position.

2CHECK F54 (15A).

• Is the F54 fuse in order?

→ Yes

For additional information, see Section 417-01.

→ No

Install a new fuse. If the fuse blows again, recheck the system. Refer to Section 417-01 for additional information.

A3: CHECKING THE IGNITION KEY REMOVAL INTERLOCK CIRCUIT.

1Turn on the ignition, gearbox in position "P" ("Park").

• Can the ignition switch be turned to position "0" and can the key be removed from the ignition switch when the gear selector lever is in position "P"?

→ Yes

Go to A4

→ No

Go to A8

A4: CHECKING THE VOLTAGE SUPPLY TO THE PARKING LOCK SOLENOID.

1Disconnect the Gear Shift Lever Assembly (C931).

2Measure the voltage between pin 3 of C931 (green/white) and ground.

• Is the voltage 0 V when the brake pedal is not pressed and is battery voltage registered when the brake pedal is pressed?

→ Yes

Go to A5

→ No

Repair open in circuit 15S-TA33 between pin 1 and pin 3 of C444 (brake light switch).

A5: CHECKING THE GROUNDING OF THE PARKING LOCK SOLENOID.

1Measure the resistance between pin 1 of C931 (black) and ground.

• Is the resistance less than 5 ohms?

→ Yes

Go to A6

→ No

Repair open in circuit 31-TA34 between pin 1 C931 and ground.

A6: CHECKING THE ELECTRICAL CIRCUIT OF THE GEAR SELECTOR LEVER.

1Measure the resistance at the gearshift lever assembly connector (C931) between pins 3 and 1. The gearshift lever is in the "P" position.

• Is the resistance between 20 ohms and 35 ohms?

→ Yes

Go to A7

→ No

Replace the parking gear lock solenoid.

A7: CHECKING THE FUNCTIONING OF THE PARKING LOCK SOLENOID.

1Place the gear shift lever in positions "R", "N", "D", "1" and "2".

- If necessary, unlock mechanically by following the description given in this section.

• Does the resistance exceed 10 ohms in all of the above positions?

→ Yes

The parking position lock solenoid has no electrical faults. Check for mechanical faults.

→ No

Replace the parking position lock solenoid.

A8: CHECKING FUSE F8 IN CJB.

1CHECK F8 (30A).

• Is the F8 fuse OK?

→ Yes

Go to A9

→ No

Install a new fuse. Recheck the system.

A9: CHECKING THE PARKING POSITION LOCK SWITCH.

1Disconnect the Gear Selector Lever Lock (C931).

2Connect the jumper wire between pin 2 of C931 (black/yellow) and ground.

- Make sure that only pin 2 is grounded and no other.

• Can the ignition key be removed with the jumper wire connected?

→ Yes

Go to A10

→ No

Go to A11

A10: CHECKING THE SHIFT LOCK GROUND CIRCUIT.

1Measure the resistance between pin 1 of C931 (black) and ground.

• Is the resistance less than 5 ohms?

→ Yes

Replace the gear selector lever lock.

→ No

Repair the open in the electrical circuit 31-TA34 between pin 1 C931 and ground.

A11: CHECKING THE VOLTAGE AT FUSE F8.

1Measure the voltage at fuse F8 (30A).

• Is battery voltage registered?

→ Yes

Go to A12

→ No

Repair the open in the electrical circuit of fuse F8.

A12: CHECKING VOLTAGE AT THE IGNITION SWITCH.

1Disconnect the Ignition Switch (C456).

2Measure the voltage between pin 4 of C456 (red) and ground.

• Is battery voltage registered?

→ Yes

Go to A13

→ No

Repair the open circuit between fuse F8 (30A) and pin 4 of C456.

A13: CHECKING THE ELECTRICAL CIRCUIT 31S-TA34.

1Measure the resistance between pin 3 of C456 (black/white) and pin 2 of C931 (black/yellow).

• Is the resistance less than 1 Ohm?

→ Yes

The ignition key removal interlock solenoid located in the ignition switch is damaged. REPLACE the ignition switch. Refer to Section 211-05 for additional information.

→ No

Repair the open in the electrical circuit 31S-TA34 between pin 3 C456 and pin 2 C931.