Ford Galaxy / Ford S-MAX. Manual — part 978

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AS1: CHECK THE PASSENGER SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TO
BATTERY

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1

Disconnect RCM C3R114.

2

Disconnect Passenger Side Impact Sensor C6R218.

3

Ignition switch in position II.

4

Measure the voltage between the:

RCM C3R114 pin 28, circuit RR132A (BU/WH),
harness side and ground.
RCM C3R114 pin 29, circuit VR218A (YE/OG),
harness side and ground.

5

Is any voltage present?
Yes

REPAIR circuit RR132A (BU/WH) or circuit VR218A
(YE/OG). REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

No

REPEAT the self-test, CLEAR the DTCs. REACTIVATE
the system.

PINPOINT TEST AT : DTC B10FE 19: PASSENGER SIDE IMPACT SENSOR
CROSS LINK TO ANOTHER FIRING CIRCUIT

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AT1: CHECK THE PASSENGER SIDE IMPACT SENSOR CIRCUITS

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1

Disconnect RCM C3R114.

2

Disconnect Passenger Side Impact Sensor C6R218.

3

Disconnect Inoperative Air Bag Module Simulator.

4

NOTE: Refer to the Wiring Diagrams for pin detail.

Measure the resistance between the:

RCM C3R114 pin 28, circuit RR132A (BU/WH), harness side and the
inoperative sensor circuits.
RCM C3R114 pin 29, circuit VR218A (YE/OG), harness side and the
inoperative sensor circuits.

5

Are the resistances greater than 10,000 ohms?
Yes

REPEAT the self-test, CLEAR the DTCs. REACTIVATE the system.

No

REPAIR the circuits. REPEAT the self-test, CLEAR the DTCs.

REACTIVATE the system.

PINPOINT TEST AU : DTC B10FE 87: PASSENGER SIDE IMPACT SENSOR
COMMUNICATIONS FAULT

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AU1: CHECK THE PASSENGER SIDE IMPACT SENSOR CIRCUIT

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1

Disconnect RCM C3R114.

2

Disconnect Passenger Side Impact Sensor
C6R218.

3

Measure the resistance between the:

RCM C3R114 pin 28, circuit RR132A (BU/WH),
harness side and the passenger side impact
sensor C6R218 pin 2, circuit RR132A
(BU/WH), harness side.
RCM C3R114 pin 29, circuit VR218A (YE/OG),
harness side and the passenger side impact
sensor C6R218 pin 1, circuit VR218A (YE/OG),
harness side.

4

Are the resistances less than 5 ohms?
Yes

INSTALL a new passenger side impact sensor.
REFER to:

Side Impact Sensor

(501-20B

Supplemental Restraint System, Removal and
Installation).
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

No

REPAIR circuit RR132A (BU/WH) or circuit
VR218A (YE/OG). REPEAT the self-test, CLEAR
the DTCs. REACTIVATE the system.

PINPOINT TEST AV : DTC B1126 11: DRIVER SIDE AIR BAG CIRCUIT
SHORT TO GROUND.

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AV1: CHECK THE DRIVER SIDE AIR BAG CIRCUIT

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1

Ignition switch in position II.

2

Carry out the self-test with the simulators
installed.

3

Does the system prove out correctly?
Yes

GO to AV2

.

No

GO to AV3

.

AV2: CHECK THE DRIVER SIDE AIR BAG MODULE

WARNING: Do not proceed with the test unless using the Ford approved diagnostic

tool. Failure to follow this instruction may result in personal injury.

Ignition switch in position 0.

1

Select DMM specific on the Ford approved
diagnostic tool.

2

Measure the resistance between the:

Driver side air bag module underseat
connector C33-L pin 5, circuit CR105A
(GN/BU), component side and ground.
Driver side air bag module underseat
connector C33-L pin 6, circuit RR105A
(GY/YE), component side and ground.

3

Are the resistances greater than 10,000 ohms?
Yes

REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

No

INSTALL a new driver side air bag module.
REFER to:

Side Air Bag Module

(501-20B

Supplemental Restraint System, Removal and
Installation).
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

AV3: CHECK THE DRIVER SIDE AIR BAG CIRCUIT FOR A SHORT TO GROUND.

Ignition switch in position 0.

1

Disconnect RCM C3R114.

2

Disconnect Driver Side Underseat Occupant
Restraint Systems Simulator.

3

Measure the resistance between the:

RCM C3R114 pin 19, circuit RR105A (GY/YE),
harness side and ground.
RCM C3R114 pin 20, circuit CR105A (GN/BU),
harness side and ground.

4

Are the resistances greater than 10,000 ohms?
Yes

REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

No

REPAIR circuit CR105A (GN/BU) or circuit
RR105A (GY/YE). REPEAT the self-test, CLEAR
the DTCs. REACTIVATE the system.

PINPOINT TEST AW : DTC B1126 12: DRIVER SIDE AIR BAG CIRCUIT
SHORT TO BATTERY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AW1: CHECK THE DRIVER AIR BAG CIRCUIT

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1

Ignition switch in position II.

2

Carry out the self-test with the simulators
installed.

3

Does the system prove out correctly?
Yes

INSTALL a new driver side air bag module.
REFER to:

Side Air Bag Module

(501-20B

Supplemental Restraint System, Removal and
Installation).
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

No

GO to AW2

.

AW2: CHECK THE DRIVER SIDE AIR BAG CIRCUIT FOR A SHORT TO BATTERY

Ignition switch in position 0.

1

Disconnect RCM C3R114.

2

Disconnect Driver Side Underseat Occupant
Restraint Systems Simulator.

3

Ignition switch in position II.

4

Measure the voltage between the:

RCM C3R114 pin 19, circuit RR105A (GY/YE),
harness side and ground.
RCM C3R114 pin 20, circuit CR105A (GN/BU),
harness side and ground.

5

Is any voltage present?
Yes

REPAIR circuit CR105A (GN/BU) or circuit
RR105A (GY/YE). REPEAT the self-test, CLEAR
the DTCs. REACTIVATE the system.

No

REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.

PINPOINT TEST AX : DTC B1126 13: DRIVER SIDE AIR BAG CIRCUIT OPEN
CIRCUIT OR HIGH RESISTANCE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AX1: CHECK THE DRIVER SIDE AIR BAG CIRCUIT

WARNING: To avoid accidental deployment, the RCM backup power supply must be

depleted. Wait at least one minute after disconnecting the battery ground cable(s) before
commencing any repair or adjustment to the SRS, or any component(s) adjacent to the
SRS sensors. Failure to follow these instructions may result in personal injury.
NOTE: Use a digital multimeter for all electrical measurements.

Deactivate the SRS.

1