Acura RL. Instruction — page 108

Fig. 28: Identifying Driver’s Airbag 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Front Passenger’s Airbag

3. Remove the glove box (see GLOVE BOX REMOVAL/INSTALLATION ), then disconnect the

front passenger’s airbag 4P connector (A) from dashboard wire harness A.

Fig. 29: Identifying Front Passenger’s Airbag 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Side Airbag

4. Disconnect both side airbag 2P connectors (A) from the left side wire harness or right side wire

harness.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) — RL

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Fig. 30: Identifying Side Airbag 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Side Curtain Airbag

5. Remove the headliner (see HEADLINER REMOVAL/INSTALLATION ). Disconnect both side

curtain airbag harness 2P connectors (A) from the side curtain airbags.

Fig. 31: Identifying Side Curtain Airbag Harness 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Seat Belt Tensioner

6. Remove the B-pillar lower trim (see B-PILLAR LOWER TRIM ). Disconnect both floor wire

harness 4P connector (A) from the seat belt tensioners.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) — RL

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Fig. 32: Identifying Floor Wire Harness 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

SRS Unit

7. Remove the center console (see CENTER CONSOLE REMOVAL/INSTALLATION ), then

remove the rear vent duct (see step 6 under DASHBOARD/STEERING HANGER BEAM
REMOVAL/INSTALLATION
). Disconnect SRS unit connector A (28P), SRS unit connector B
(28P), and/or SRS unit connector C (28P) from the SRS unit.

Fig. 33: Identifying SRS Unit Connector A (28P), SRS Unit Connector B (28P) And SRS Unit
Connector C (28P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

GENERAL TROUBLESHOOTING INFORMATION

DTC (DIAGNOSTIC TROUBLE CODES)

The self-diagnostic function of the SRS system allows it to locate the causes of system problems and then
store this information in memory. For easier troubleshooting, this data can be retrieved via a data link
circuit.

When you turn the ignition switch ON (II), the SRS indicator comes on. If it goes off after 6 seconds,
the system is normal, and is not currently detecting any abnormality.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) — RL

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If there is an abnormality, the system locates and defines the problem, stores this information in
memory, and turns the SRS indicator on. The data remains in memory even when the ignition switch
is turned off or if the battery is disconnected.

The data is stored in memory as a diagnostic trouble code (DTC).

DTCs are either latching or resetting depending on the malfunction. With resetting DTCs, the SRS
indicator goes off the next time the ignition switch is turned ON and the system is normal, but the
DTC is still stored. With latching DTCs, the SRS indicator does not turn OFF until the malfunction is
repaired and the DTC is cleared.

When you connect the HDS to the data link connector (DLC), you can retrieve a more detailed DTC
in the Honda Systems «SRS» menu.

After reading and recording the DTC, proceed with the troubleshooting procedure for that code.

Precautions

Use only a digital multimeter to check the system. If it’s not a Honda multimeter, make sure its output
is 10 mA (0.01 A) or less when switched to the smallest value in the ohmmeter range. A tester with a
higher output could damage the airbag circuit or cause accidental airbag deployment and possible
injury.

Whenever the ignition switch is ON (II), or has been turned OFF for less than 3 minutes, be careful
not to bump the SRS unit; the airbags could accidentally deploy and cause damage or injuries.

Before you remove the dashboard wire harness A or the right side wire harness, disconnect the
driver’s airbag connector, the front passenger’s airbag connector, both side airbag connectors, both
side curtain airbag connectors, and both seat belt tensioner connectors.

Make sure the battery is sufficiently fully charged. If the battery is dead or low, measured values may
not be correct.

Do not touch a tester probe to the terminals in the SRS unit or harness connectors, and do not connect
the SRS unit terminals or the sensor terminals with a jumper wire. Use only the backprobe set and the
multimeter. Backprobe spring-loaded lock type connectors correctly.

READING THE DTC

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the data link connector (DLC) (A).

Fig. 34: Identifying Data Link Connector

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) — RL

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