Pinpoint speed control tests

A1: CHECKING THE OPERATION OF THE SOUND SIGNAL

1Press the horn switches.

• Does the signal sound?

→ Yes

Go to A2

→ No

Perform airbag sliding contact diagnostics. Refer to Section 413-06 for additional information.

A2: CHECKING THE SWITCH OPERATION

1Disconnect the Speed Control System Actuator - C831.

2Disconnect the Airbag Sliding Contact - C896.

3Remove fuse 53 (10 A).

4Using a digital multimeter, measure the resistance between pin 5 of the speed control actuator C831, circuit 8-PG13 (white), harness side, and pin 6 of the air bag wiper C896, circuit 15-PG13 (white), harness side, with the ON switch pressed.

• Is the resistance between 260 and 280 ohms?

→ Yes

Install fuse 53 (10A). Go to A3

→ No

Install fuse 53 (10A). Go to A5

A3: CHECKING THE SWITCH INPUT SIGNAL TO THE SPEED CONTROL SYSTEM ACTUATOR

1Using a digital multimeter, measure the resistance between pin 5 of the speed control actuator C831, circuit 8-PG13 (white), harness side, and pin 6 of the speed control actuator C831, circuit 9-PG13 (brown), harness side, with the OFF switch pressed.

• Is the resistance less than 5 ohms?

→ Yes

Go to A6

→ No

Go to A4

A4: CHECK THE ELECTRICAL CIRCUIT 8-PG13 (WHITE) FOR OPENINGS.

WARNING: For additional information, refer to Section 501-20A / 501-20B for the proper procedure for disabling the air bag system.

1Disconnect the airbag sliding contact.

2Using a digital multimeter, measure the resistance between pin 5 of the speed control actuator C831, circuit 8-PG13 (white), wiring harness side, and pin 4 of the air bag wiper C896, circuit 8-PG13 (white), wiring harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to A5

→ No

Repair electrical circuit 8-PG13 (white). Check the correct operation of the system.

A5: CHECK THE AIR BAG SLIDING CONTACT CIRCUIT FOR OPENINGS

1Disconnect the Speed Control Switch - C921.

2Using a digital multimeter, measure the resistance between pin 4 (white) of the air bag slider connector C896, slider side, and pin 3 of the air bag slider connector C921, slider side, and between pin 5 (brown) of the air bag slider connector C896, slider side, and pin 2 of the air bag slider connector C921, slider side, and between pin 6 (green/yellow) of the air bag slider connector C896, slider side, and between pin 1 of the air bag slider connector C921, component side.

• Is the resistance less than 5 ohms?

→ Yes

Install a new speed control switch. Check that the system operates correctly.

→ No

Install a new airbag sliding contact. Check that the system is operating correctly.

A6: CHECK ELECTRICAL CIRCUIT 91-PG12 (BLACK/WHITE) FOR OPEN

1Using a digital multimeter, measure the resistance between pin 10 C831 of the speed control actuator, circuit 91-PG12 (black/white), harness side, and ground.

• Is the resistance less than 5 ohms?

→ Yes

Go to A7

→ No

Repair the electrical circuit. Check the correct operation of the system.

A7: CHECKING ELECTRICAL CIRCUIT 15-PG12 (GREEN/WHITE) FOR VOLTAGE

1Enter the ON position.

2Using a digital multimeter, measure the voltage between pin 7 of the speed control actuator C831, circuit 15-PG12 (green/white), harness side, and ground.

• Is the resistance more than 10V?

→ Yes

Go to A8

→ No

Check fuse 53 (10A). If it is blown, install a new fuse. Check for proper system operation. If the fuse blows again, check for a short to ground. If the fuse is good, repair circuit 15-PG12 (green/white). Check for proper system operation.

A8: CHECKING THE BRAKE PEDAL POSITION SWITCH (BPPS) INPUT

1Using a digital multimeter, measure the voltage between pin 9 of the speed control actuator C831, circuit 15S-PG16 (green/yellow), harness side, and ground.

• Is the resistance more than 10V?

→ Yes

Go to A12

→ No

Go to A9

A9: CHECKING THE BRAKE PEDAL POSITION SWITCH (BPPS)

1Disconnect the BPP Switch - C824.

2Using a digital multimeter, measure the resistance between pins 1 and 2 of the C824 BPP switch, on the switch side, with the switch plunger pressed and released.

• Is the resistance greater than 10,000 ohms with the plunger depressed and less than 5 ohms with the plunger released?

→ Yes

Go to A10

→ No

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

A10: CHECK ELECTRICAL CIRCUIT 15-PG6 (GREEN/YELLOW) FOR VOLTAGE IN THE CIRCUIT

1Using a digital multimeter, measure the voltage between pin 2 of the BPP switch, C824, circuit 15-PG6 (green/yellow), harness side, and ground.

• Is the resistance more than 10V?

→ Yes

Go to A11

→ No

Check fuse 54 (15A). If it is blown, install a new fuse. Check for proper system operation. If the fuse blows again, check for a short to ground. If the fuse is good, repair circuit 15-PG6 (green/yellow). Check for proper system operation.

A11: CHECK ELECTRICAL CIRCUIT 15S-PG16 (GREEN/YELLOW) FOR OPEN

1Using a digital multimeter, measure the resistance between pin 9 of the speed control actuator C831, circuit 15S-PG16 (green/yellow), harness side, and pin 1 of the BPP switch C824, circuit 15S-PG16 (green/yellow), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Adjust the BPP switch. Check that the system is working properly.

→ No

Repair electrical circuit 15S-PG16 (green/yellow). Check that the system operates correctly.

A12: CHECKING THE SIGNAL FROM THE STOP LIGHT SWITCH TO THE ACTUATOR

1Using a digital multimeter, measure the voltage between pin 4 of the speed control actuator C831, circuit 15S-PG17 (green/blue), harness side, and ground with the brake pedal depressed.

• Is the resistance more than 10V?

→ Yes

Go to A15

→ No

Vehicles with manual transmission in the block with the driving axle. Go to A13 If the brake lights are functioning properly, REPAIR the 15S-PG17 (Green/Blue) circuit. Check for proper system operation.

If the brake lights are not functioning, refer to Section 417-01 for additional information.

A13: CHECK POWER SUPPLY TO CLUTCH PEDAL POSITION SWITCH (CPP).

1Disconnect the CPP Switch - C825.

2Using a digital multimeter, measure the voltage between pin 3 of the CPP switch, C825, circuit 15S-PG7 (green/blue), harness side, and ground, with the clutch pedal depressed.

• Is the resistance more than 10V?

→ Yes

Go to A14

→ No

Repair electrical circuit 15S-PG7 (green/blue). Check that the system is operating correctly.

A14: CHECKING THE CLUTCH PEDAL POSITION SWITCH (CPP)

1Using a digital multimeter, measure the resistance between pins 1 and 3 of the C825 CPP switch, on the switch side.

• Is the resistance less than 5 ohms?

→ Yes

Repair electrical circuit 15S-PG7 (green/blue). Check that the system is operating correctly.

→ No

Adjust or install a new CPP switch. Check that the system is operating correctly.

A15: CHECKING THE SIGNAL FROM THE VEHICLE SPEED SENSOR (VSS) TO THE ACTUATOR

1Disconnect the Instrument Cluster - C809.

2Disconnect the Powertrain Control Module (PCM) - C415.

3Using a digital multimeter, measure the resistance between pin 28 of the C415 PCM (pin 4 on the 60-pin PCM), circuit 8-RE22 (White/Green), harness side, and pin 3 of the C831 Speed Control Actuator, circuit 8-PG18 (White/Blue), harness side.

• Is the resistance greater than 10,000 ohms?

→ Yes

Repair electrical circuit 8-PG18 (white/blue) or 8-RE22 (white/green). Check that the system is operating correctly.

→ No

Use WDS/FDS 2000 to retrieve stored DTCs. If DTCs are not present, install a new speed control actuator. Check that the system is operating correctly.

B1: CHECKING THE BRAKE PEDAL POSITION SWITCH (BPPS)

1Enter the OFF position.

2Disconnect the BPP Switch - C824.

3Using a digital multimeter, measure the resistance between pins 1 and 2 of the C824 BPP switch, on the switch side, with the brakes not applied.

• Is the resistance less than 5 ohms?

→ Yes

Go to B2

→ No

Adjust or install a new BPP switch. Check that the system is working properly.

B2: CHECK ELECTRICAL CIRCUIT 15-PG6 (GREEN/YELLOW) OF BRAKE PEDAL POSITION SWITCH FOR VOLTAGE

1Enter the ON position.

2Using a digital multimeter, measure the voltage between pin 2 of the BPP switch, C824, circuit 15-PG6 (green/yellow), harness side, and ground.

• Is the resistance more than 10V?

→ Yes

Go to B3

→ No

If the brake lights are working, repair the 15-PG6 (green/yellow) circuit. Check for proper system operation.

If the brake lights do not work, refer to Section 417-01 for additional information.

B3: CHECKING ELECTRICAL CIRCUIT 15S-PG16 (GREEN/YELLOW) FOR OPEN

1Enter the OFF position.

2Disconnect the Speed Control System Actuator - C831.

3Using a digital multimeter, measure the resistance between pin 1 of the BPP switch C824, circuit 15S-PG16 (green/yellow), and pin 9 of the speed control system C831, circuit 15S-PG16 (green/yellow), on the wiring harness side.

• Is the resistance less than 5 ohms?

→ Yes

Install a new speed control actuator. Check that the system is operating correctly.

→ No

Repair electrical circuit 15S-PG16 (green/yellow). Check that the system operates correctly.

C1: CHECKING THE COAST SWITCH

1Enter the OFF position.

2Disconnect the Speed Control System Actuator - C831.

3Using a digital multimeter, measure the resistance between pin 5 of the speed control actuator, C831, circuit 8-PG13 (white), and pin 6 of the C831, circuit 9-PG13 (brown), harness side, with the COAST switch pressed.

• Is the resistance between 110 and 130 ohms?

→ Yes

Install a new speed control actuator. Check that the system is operating correctly.

→ No

Go to C2 Proceed to PINPOINT TEST C

C2: CHECKING THE RESUME SWITCH

1Using a digital multimeter, measure the resistance between pin 5 of C831 of the speed control actuator, circuit 8-PG13 (white), and pin 6 of C831 of the circuit 9-PG13 (brown), on the wiring harness side, with the RESUME switch pressed.

• Is the resistance between 110 and 130 ohms?

→ Yes

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

→ No

Go to A4

D1: CHECKING THE RESUME SWITCH

1Enter the OFF position.

2Disconnect the Speed Control System Actuator - C831.

3Using a digital multimeter, measure the resistance between pin 5 of C831, speed control actuator, circuit 8-PG13 (white), harness side, and pin 6 of C831, circuit 9-PG13 (brown), harness side, with the RESUME switch pressed.

• Is the resistance between 110 and 130 ohms?

→ Yes

Install a new speed control actuator. Check that the system is operating correctly.

→ No

Go to D2.

D2: CHECKING THE COAST SWITCH

1Using a digital multimeter, measure the resistance between pin 5 of the speed control actuator, C831, circuit 8-PG13 (white), and pin 6 of the C831, circuit 9-PG13 (brown), harness side, with the COAST switch pressed.

• Is the resistance between 110 and 130 ohms?

→ Yes

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

→ No

Go to A4

E1: CHECKING THE CLUTCH PEDAL POSITION SWITCH (CPP)

1Disconnect the CPP Switch - C825.

2Using a digital multimeter, measure the resistance between pins 1 and 3 of the C825 CPP switch on the switch side, with the switch plunger pressed and released.

• Is the resistance greater than 10,000 ohms with the plunger depressed and less than 5 ohms with the plunger released?

→ Yes

Adjust the CPP switch.

→ No

Install a new CPP switch.