Acura TSX / Honda Accord CL. Manual - part 707

 

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Acura TSX / Honda Accord CL. Manual - part 707

 

 

Fig. 36: Identifying Dashboard Wire Harness 24-pin Connector 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

DTC 85-79 

1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Erase Diagnostic Trouble Code (DTC) 

memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY under DIAGNOSTICS. Turn 
ignition switch to ON position. If AIR BAG warning light stays on, go to next step. If AIR BAG warning 
light goes off after about 6 seconds, system is okay at this time. Check for intermittent malfunction. See 
TROUBLESHOOTING INTERMITTENT FAILURES under DIAGNOSTICS.  

2. Ensure nothing is on right front seat. Turn ignition switch to ON position. If AIR BAG warning light goes 

off after about 6 seconds, system is okay at this time. If AIR BAG warning light stays on, initialize 
Occupant Position Detection System (OPDS) unit. See INITIALIZING OCCUPANT POSITION 
DETECTION SYSTEM (OPDS) UNIT
 under DIAGNOSTICS.  

DTC 86-1, 86-2 

1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Erase Diagnostic Trouble Code (DTC) 

memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY under DIAGNOSTICS. Turn 
ignition switch to ON position. If AIR BAG warning light stays on, go to next step. If AIR BAG warning 
light goes off after about 6 seconds, system is okay at this time. Check for intermittent malfunction. See 
TROUBLESHOOTING INTERMITTENT FAILURES under DIAGNOSTICS.  

 

2004 Acura TSX 

2004 ACCESSORIES/SAFETY EQUIPMENT Acura - Air Bag Restraint Systems

  

 

2. Access Occupant Position Detection System (OPDS) unit and OPDS sensor and check connectors for 

proper connection. See OCCUPANT POSITION DETECTION SYSTEM (OPDS) UNIT under 
REMOVAL & INSTALLATION. If connections are okay, go to next step. If connections are not okay, 
reconnect connectors. Erase Diagnostic Trouble Code (DTC) memory.  

3. Replace OPDS sensor and seat back foam. Erase Diagnostic Trouble Code (DTC) memory. Retrieve 

DTC. See RETRIEVING DIAGNOSTIC TROUBLE CODE (DTC) under DIAGNOSTICS. If DTC 
86-1 or 86-2 is indicated, go to next step. If DTC 86-1 or 86-2 is not indicated, system is okay at this 
time.  

4. Replace OPDS unit. See OCCUPANT POSITION DETECTION SYSTEM (OPDS) UNIT under 

REMOVAL & INSTALLATION. Initialize OPDS unit. See INITIALIZING OCCUPANT POSITION 
DETECTION SYSTEM (OPDS) UNIT
 under DIAGNOSTICS. Erase Diagnostic Trouble Code (DTC) 
memory. Retrieve DTC. If DTC 86-1 or 86-2 is indicated, replace SRS unit. See SRS UNIT under 
REMOVAL & INSTALLATION. If DTC 86-1 or 86-2 is not indicated, system is okay at this time.  

DTC 87-31, 87-32 

1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Erase Diagnostic Trouble Code (DTC) 

memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY under DIAGNOSTICS. Turn 
ignition switch to ON position. If AIR BAG warning light stays on, go to next step. If AIR BAG warning 
light goes off after about 6 seconds, system is okay at this time. Check for intermittent malfunction. See 
TROUBLESHOOTING INTERMITTENT FAILURES under DIAGNOSTICS.  

2. Turn ignition switch to OFF position. Ensure nothing is on right front seat. Access Occupant Position 

Detection System (OPDS) unit and disconnect OPDS unit 8-pin connector. See OCCUPANT 
POSITION DETECTION SYSTEM (OPDS) UNIT
 under REMOVAL & INSTALLATION. Turn 
ignition switch to ON position. Measure voltage between ground and OPDS harness 8-pin connector 
terminal No. 3. See Fig. 35 . If battery voltage is present, replace OPDS unit. If battery voltage is not 
present, go to next step.  

3. Turn ignition switch to OFF position. Access instrument cluster harness connectors. See INSTRUMENT 

CLUSTER under REMOVAL & INSTALLATION. Disconnect instrument cluster 22-pin harness 
connector "B". See Fig. 32 . Measure resistance between ground and OPDS harness 8-pin connector 
terminal No. 3. If resistance is more than one megohm, go to next step. If resistance is less than one 
megohm, short to ground exists in OPDS harness, floor wire harness or dashboard wire harness. Replace 
appropriate wire harness.  

4. Measure resistance between instrument cluster 22-pin harness connector "B", terminal No. 10 and OPDS 

harness 8-pin connector terminal No. 3. If resistance is 0-1 ohm, replace instrument cluster. If resistance 
is not 0-1 ohm, check for open in OPDS unit harness, floor wire harness or dashboard wire harness. 
Replace appropriate harness. See WIRING DIAGRAMS .  

DTC A1-1 

1. Check fuse No. 10 (7.5-amp) located in instrument panel fuse/relay box. If fuse is okay, go to next step. If 

fuse is blown, repair short to ground in fuse No. 10 circuit. See WIRING DIAGRAMS .  

2. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG 

SYSTEM. Access and disconnect SRS unit connector "A". See SRS UNIT under REMOVAL & 
INSTALLATION. Reconnect negative battery cable. Connect voltmeter between ground and SRS unit 
connector "A", terminal No. 17. See Fig. 33 . Turn ignition switch to ON position and measure voltage. If 

 

2004 Acura TSX 

2004 ACCESSORIES/SAFETY EQUIPMENT Acura - Air Bag Restraint Systems

  

 

battery voltage is present, check connection between SRS unit connector "A" and SRS unit. If connection 
is okay, replace SRS unit. If battery voltage is not present, go to next step.  

3. Turn ignition switch to OFF position. Disconnect instrument panel fuse/relay box connector "S". See Fig. 

37 . Measure resistance between connector "S", terminal No. 1 and SRS unit connector "A", terminal No. 
17. If resistance is 0-1 ohm, check connections between fuse/relay box connector "S" and instrument 
panel fuse/relay box. If connection is okay, replace instrument panel fuse box. If resistance is more than 
one ohm, replace dashboard wire harness.  

Fig. 37: Identifying Instrument Panel Fuse/relay Box Connector "S" 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

DTC A2-1 

1. Check fuse No. 22 (10-amp) in instrument panel fuse/relay box. If fuse is okay, go to step 4 . If fuse is 

blown, go to next step.  

2. Replace fuse No. 22 (10-amp). Turn ignition switch to ON position and wait at least 30 seconds. Check 

fuse No. 22. If fuse No. 22 is okay, system is okay at this time. If fuse No. 22 is blown, go to next step.  

3. Replace fuse No. 22 (10-amp). Disable air bag system. See DISABLING SYSTEM under DISABLING 

& ACTIVATING AIR BAG SYSTEM. Access and disconnect SRS unit connector "A". See SRS UNIT 
under REMOVAL & INSTALLATION. Reconnect negative battery cable. Turn ignition switch to ON 
position and wait at least 30 seconds. Check fuse No. 22. If fuse No. 22 is okay, replace SRS unit. If fuse 
No. 22 is blown, short to ground exists in dashboard wire harness or fuse No. 22 circuit. Replace 
dashboard wire harness. If problem persists, replace instrument panel fuse/relay box.  

4. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG 

 

2004 Acura TSX 

2004 ACCESSORIES/SAFETY EQUIPMENT Acura - Air Bag Restraint Systems

  

 

SYSTEM. Access and disconnect SRS unit connector "A". See SRS UNIT under REMOVAL & 
INSTALLATION. Reconnect negative battery cable. Connect voltmeter between ground and SRS unit 
connector "A", terminal No. 18. Turn ignition switch to ON position and measure voltage. If battery 
voltage is present, check connection between SRS unit connector "A" and SRS unit. If connection is 
okay, replace SRS unit. If battery voltage is not present, go to next step.  

5. Turn ignition switch to OFF position. Disconnect instrument panel fuse/relay box connector "S". See Fig. 

37 . Measure resistance between instrument panel fuse/relay box connector "S", terminal No. 2 and SRS 
unit connector "A", terminal No. 18. If resistance is 0-1 ohm, check connections between fuse/relay box 
connector "S" and instrument panel fuse/relay box. If connection is okay, replace instrument panel fuse 
box. If resistance is more than one ohm, replace dashboard wire harness.  

6. Disconnect SRS main harness connector C801. See Fig. 33 . Measure resistance between SRS main 

harness connector terminal No. 2 and SRS main harness C803, terminal No. 18. If resistance is 0-1 ohm, 
replace SRS main subharness. If resistance is more than one ohm, replace SRS main harness.  

WIRING DIAGRAMS 

 

2004 Acura TSX 

2004 ACCESSORIES/SAFETY EQUIPMENT Acura - Air Bag Restraint Systems

  

 

 

 

 

 

 

 

 

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