Ford Falcon. Manual — part 460

501-20b-55

Occupant Restraints — Passive

501-20b-55

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

H7

CHECK CIRCUIT 614 (O/B) AND CIRCUIT 615 (GY/WH)

FOR AN OPEN BETWEEN THE RCM AND THE DRIVER

AIR BAG MODULE

Key in OFF position.

Yes

Go to H9.

Disconnect Driver Airbag Module Squib 1 Restraint System
Diagnostic Tool

No

Go to H8.

Disconnect RCM C189a.

Measure the resistance between RCM C189a pin 1, circuit 614 (O/B),
harness side and driver airbag module, circuit 614 (O/B), harness
side.

Is the resistance less than 0.5 ohm?

H8

CHECK CIRCUIT 614 (O/B) FOR AN OPEN BETWEEN

THE RCM AND THE CLOCKSPRING

Disconnect Clockspring C190.

Yes

INSTALL a new clockspring. REFER to

Measure the resistance between RCM C189a pin 1, circuit 614 (O/B), Clockspring. Go to H39.

harness side and clockspring C190, circuit 614 (O/B), harness side.

No

Is the resistance less than 0.5 ohm?

REPAIR circuit 614 (O/B). Go to H39.

H9

CHECK CIRCUIT 615 (GY/WH) FOR AN OPEN BETWEEN

THE RCM AND THE DRIVER AIR BAG MODULE

Measure the resistance between RCM C189a pin 2, circuit 615

Yes

(GY/WH), harness side and driver airbag module, circuit 615

Go to H37.

(GY/WH), harness side.

No

Is the resistance less than 0.5 ohm?

Go to H10.

H10

CHECK CIRCUIT 615 (GY/WH) FOR AN OPEN BETWEEN

THE RCM AND THE CLOCKSPRING

Disconnect Clockspring C190.

Yes

INSTALL a new clockspring. REFER to

Measure the resistance between RCM C189a pin 2, circuit 615

Clockspring in this section. Go to H39.

(GY/WH), harness side and clockspring C190, circuit 615 (GY/WH),
harness side.

No

REPAIR circuit 615 (GY/WH). Go to H39.

Is the resistance less than 0.5 ohm?

H11

CHECK CIRCUIT 614 (O/B) AND CIRCUIT 615 (GY/WH)

FOR LOW RESISTANCE BETWEEN THE DRIVER AIR

BAG MODULE AND THE RCM

Key in OFF position.

Yes

Go to H37.

Disconnect Driver Airbag Module Squib 1 Restraint System
Diagnostic Tool.

No

Go to H12.

Measure the resistance between driver airbag module, circuit 614
(O/B) and circuit 615 (GY/WH), harness side.

Is the resistance greater than 10,000 ohms?

H12

MEASURE THE RESISTANCE BETWEEN RCM CIRCUIT

614 (O/B) AND CIRCUIT 615 (GY/WH)

Disconnect RCM C189a.

Yes

Go to H13.

Measure the resistance between RCM C189a pin 1, circuit 614 (O/B),
and pin 2, circuit 615 (GY/WH), component side.

No

Go to H37.

Is the resistance greater than 10,000 ohms?

G12345 en

501-20b-56

Occupant Restraints — Passive

501-20b-56

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

H13

CHECK CIRCUIT 614 (O/B) AND CIRCUIT 615 (GY/WH)

FOR LOW RESISTANCE BETWEEN THE CLOCKSPRING

AND THE RCM

Connect RCM C189a.

Yes

INSTALL a new clockspring. REFER to

Disconnect Clockspring C190.

Clockspring in this section. Go to H39.

Measure the resistance between clockspring C190, circuit 614 (O/B)

No

and, circuit 615 (GY/WH), harness side.

REPAIR circuit 614 (O/B) and circuit 615

Is the resistance greater than 10,000 ohms?

(GY/WH). Go to H39.

H14

CHECK CIRCUIT 607 (BR) AND CIRCUIT 616 (PK/BK)

FOR A SHORT TO GROUND BETWEEN THE RCM AND

THE PASSENGER AIR BAG MODULE

Key in OFF position.

Yes

Go to H37.

Disconnect Passenger Airbag Module Restraint System Diagnostic
Tool.

No

Due to the shorting bar feature in the electrical

Disconnect RCM C189a.

connector, the fault can exist in either circuit. Do

Measure the resistance between RCM C189a pin 3, circuit 607 (BR),

not remove or defeat the shorting bar.

harness side and ground; and between RCM C189a pin 4, circuit 616

REPAIR circuit 607 (BR) or circuit 616 (PK/BK).

(PK/BK), harness side and ground.

Go to H39.

Are the resistances greater than 1,000,000 ohms?

H15

CHECK CIRCUIT 607 (BR) AND CIRCUIT 616 (PK/BK)

FOR A SHORT TO BATTERY BETWEEN THE RCM AND

THE PASSENGER AIR BAG MODULE

Key in OFF position.

Yes

Go to H37.

Disconnect Passenger Airbag Module Restraint System Diagnostic
Tool.

No

Due to the shorting bar feature in the electrical

Disconnect RCM C189a.

connector, the fault can exist in either circuit. Do

Key in ON position.

not remove or defeat the shorting bar.
REPAIR circuit 607 (BR) or circuit 616 (PK/BK).

Measure the voltage between RCM C189a pin 3, circuit 607 (BR),

Go to H39.

harness side and ground; and between RCM C189a pin 4, circuit 616
(PK/BK), harness side and ground.

Are the voltages less than 0.2 volt?

H16

CHECK CIRCUIT 607 (BR) FOR AN OPEN BETWEEN

THE RCM AND THE PASSENGER AIR BAG MODULE

Key in OFF position.

Yes

Go to H17.

Disconnect Passenger Airbag Module Restraint System Diagnostic
Tool.

No

REPAIR circuit 607 (BR). Go to H39.

Disconnect RCM C189a.

Measure the resistance between RCM C189a pin 3, circuit 607 (BR),
harness side and passenger airbag module C146, circuit 607 (BR),
harness side.

Is the resistance less than 0.5 ohm?

H17

CHECK CIRCUIT 616 (PK/BK) FOR AN OPEN BETWEEN

THE RCM AND THE PASSENGER AIR BAG MODULE

Measure the resistance between RCM C189a pin 4, circuit 616

Yes

(PK/BK), harness side and passenger airbag module C146, circuit

Go to H37.

616 (PK/BK), harness side.

No

Is the resistance less than 0.5 ohm?

REPAIR circuit 616 (PK/BK). Go to H39.

G12345 en

501-20b-57

Occupant Restraints — Passive

501-20b-57

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

H18

CHECK CIRCUIT 607 (BR) AND CIRCUIT 616 (PK/BK)

FOR LOW RESISTANCE BETWEEN THE PASSENGER

AIR BAG MODULE AND THE RCM

Key in OFF position.

Yes

Go to H37.

Disconnect Passenger Airbag Module Restraint System Diagnostic
Tool.

No

Go to H19.

Measure the resistance between passenger airbag module C146,
circuit 607 (BR), and pin 2, circuit 616 (PK/BK), harness side.

Is the resistance greater than 10,000 ohms?

H19

MEASURE THE RESISTANCE BETWEEN RCM CIRCUIT

607 (BR) AND CIRCUIT 616 (PK/BK)

Disconnect RCM C189a.

Yes

REPAIR circuit 607 (BR) and circuit 616 (PK/BK)

Measure the resistance between RCM C189a pin 3, circuit 607 (BR),

Go to H22.

and pin 4, circuit 616 (PK/BK), component side.

No

Is the resistance greater than 10,000 ohms?

Go to H37.

H20

CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517

(GR/B) FOR A SHORT TO GROUND BETWEEN THE

RCM AND THE DRIVER AIR BAG MODULE

Disconnect RCM C189a.

Yes

Go to H37.

Disconnect Driver Airbag Module Squib 2 Restraint System
Diagnostic Tool.

No

Go to H21.

Measure the resistance between RCM C189a pin 5, circuit 1516
(YE/WH), harness side and ground; and between RCM C189a pin 6,
circuit 1517 (GR/B), harness side and ground.

Are the resistances greater than 1,000,000 ohms?

H21

CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517

(GR/B) FOR A SHORT TO GROUND BETWEEN THE

RCM AND THE CLOCKSPRING

Disconnect Clockspring C190.

Yes

INSTALL a new clockspring. REFER to

Measure the resistance between RCM C189a pin 5, circuit 1516

Clockspring in this section. Go to H39.

(YE/WH), harness side and ground; and between RCM C189a pin 6,
circuit 1517 (GR/B), harness side and ground.

No

Due to the shorting bar feature in the electrical

Are the resistances greater than 1,000,000 ohms?

connector, the fault can exist in either circuit. Do
not remove or defeat the shorting bar.
REPAIR circuit 1516 (YE/WH) or circuit 1517
(GR/B). Go to H39.

H22

CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517

(GR/B) FOR A SHORT TO VOLTAGE BETWEEN THE

RCM AND THE DRIVER AIR BAG MODULE

Disconnect Driver Airbag Module Squib 2 Restraint System

Yes

Diagnostic Tool.

Go to H37.

Disconnect RCM C189a.

No

Go to H23.

Key in ON position.

Measure the voltage between RCM C189a pin 5, circuit 1516
(YE/WH), harness side and ground; and between RCM C189a pin 6,
circuit 1517 (GR/B), harness side and ground.

Are the voltages less than 0.2 volt?

G12345 en

501-20b-58

Occupant Restraints — Passive

501-20b-58

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

H23

CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517

(GR/B) FOR A SHORT TO VOLTAGE BETWEEN THE

RCM AND THE CLOCKSPRING

Key in OFF position.

Yes

INSTALL a new clockspring. REFER to

Disconnect Clockspring C190.

Clockspring in this section. Go to H39.

Key in ON position.

No

Measure the voltage between RCM C189a pin 5, circuit 1516

Due to the shorting bar feature in the electrical

(YE/WH), harness side and ground; and between RCM C189a pin 6,

connector, the fault can exist in either circuit. Do

circuit 1517 (GR/B), harness side and ground.

not remove or defeat the shorting bar.
REPAIR circuit 1516 (YE/WH) or circuit 1517

Are the voltages less than 0.2 volt?

(GR/B). Go to H39.

H24

CHECK CIRCUIT 1516 (YE/WH) FOR AN OPEN

BETWEEN THE RCM AND THE DRIVER AIR BAG

MODULE

Key in OFF position.

Yes

Go to H26.

Disconnect Driver Airbag Module Squib 2 Restraint System
Diagnostic Tool.

No

Go to H25.

Disconnect RCM C189a.

Measure the resistance between RCM C189a pin 5, circuit 1516
(YE/WH), harness side and the driver airbag module squib 2, circuit
1516 (YE/WH), harness side.

Is the resistance less than 0.5 ohm?

H25

CHECK CIRCUIT 1516 (YE/WH) FOR AN OPEN

BETWEEN THE RCM AND THE CLOCKSPRING

Disconnect Clockspring C190.

Yes

INSTALL a new clockspring. REFER to

Measure the resistance between RCM C189a pin 5, circuit 1516

Clockspring in this section. Go to H39.

(YE/WH), harness side and clockspring C190, circuit 1516 (YE/WH),
harness side.

No

REPAIR circuit 1516 (YE/WH). Go to H39.

Is the resistance less than 0.5 ohm?

H26

CHECK CIRCUIT 1517 (GR/B) FOR AN OPEN BETWEEN

THE RCM AND THE DRIVER AIR BAG MODULE

Measure the resistance between RCM C189a pin 6, circuit 1517

Yes

(GR/B), harness side and driver airbag module squib 2, circuit 1517

Go to H37.

(GR/B), harness side.

No

Is the resistance less than 0.5 ohm?

Go to H27.

H27

CHECK CIRCUIT 1517 (GR/B) FOR AN OPEN BETWEEN

THE RCM AND THE CLOCKSPRING

Disconnect Clockspring C190.

Yes

INSTALL a new clockspring. REFER to

Measure the resistance between RCM C189a pin 6, circuit 1517

Clockspring in this section. Go to H39.

(GR/B), harness side and clockspring C190, circuit 1517 (GR/B),
harness side.

No

REPAIR circuit 1517 (GR/B). Go to H39.

Is the resistance less than 0.5 ohm?

G12345 en