Acura RL. Manual - part 541

3. Wait for 6 seconds or more.  

4. Check for DTCs with the HDS. 

Is DTC B1168, B1169, and/or B1178 indicated?  

YES - Go to step 5. 

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connection between 
the gauge control module and the PCM. 

5. Check for Fuel and Emissions Systems DTCs with the HDS. 

Are there any DTCs indicated?  

YES - Go to the indicated DTCs troubleshooting, then recheck. 

NO - Go to step 6. 

6. Turn the ignition switch OFF.  

7. Disconnect gauge control module connector B (28P).  

8. Jump the SCS with the HDS.  

9. Disconnect PCM connector A (49P).  

10. Connect gauge control module connector B (28P) No. 15 and No. 16 terminals and body ground with 

jumper wires. 

Fig. 16: Connecting Gauge Control Module Connector B No. 15 And No. 16 Terminals And 
Body Ground With Jumper Wires 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

11. Check for continuity between body ground and PCM connector terminals E15 and E26 individually. 

 

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Fig. 17: Checking Continuity Between Body Ground And PCM Connector Terminals E15 And 
E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or 
substitute a known-good PCM (see SUBSTITUTING THE PCM ), and recheck. If the indication 
goes away, replace the original PCM (see PCM REPLACEMENT ). If the DTC is still present, 
replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ). 

NO - Repair an open in the wire. 

DTC B1170: GAUGE CONTROL MODULE LOST COMMUNICATION WITH VSA 
MODULATOR-CONTROL UNIT (VSA MESSAGE) 

1. Clear the DTCs with the HDS.  

2. Turn the ignition switch OFF, and then back ON (II).  

3. Check for DTCs with the HDS. 

Is DTC B1170 indicated?  

YES - Go to step 4. 

NO - Intermittent failure, the F-CAN communication line is OK at this time. Check for loose or poor 
connections. If the connections are good, check the battery condition (see BATTERY TEST ) and the 
charging system (see BATTERY TEST ). 

4. Check for VSA System DTCs with the HDS. 

Are any DTCs indicated?  

YES - Go to the INDICATED DTCS TROUBLESHOOTING. 

NO - Go to step 5. 

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions 
in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN 
SYSTEM DIAGNOSIS TEST MODE A ).

 

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5. Do the gauge control module input test (see GAUGE CONTROL MODULE INPUT TEST ). 

Are all inputs OK?  

YES - Go to step 6. 

NO - Repair the faulty input, then recheck for DTCs. 

6. Substitute a known-good gauge control module.  

7. Clear the DTCs with the HDS.  

8. Turn the ignition switch OFF, and then back ON (II).  

9. Check for the DTCs with the HDS. 

Is DTC B1170 indicated?  

YES - Substitute a known-good VSA modulator-control unit, and recheck. 

NO - The original gauge control module is faulty; replace it (see GAUGE CONTROL MODULE 
REPLACEMENT ). 

DTC B1171: GAUGE CONTROL MODULE LOST COMMUNICATION WITH ADAPTIVE 
CRUISE CONTROL UNIT (ACC MESSAGE) 

1. Clear the DTCs with the HDS.  

2. Turn the ignition switch OFF, and then back ON (II).  

3. Check for the DTCs with the HDS. 

Is DTC B1171 indicated?  

YES - Go to step 4. 

NO - Intermittent failure, the F-CAN communication line is OK at this time. Check for loose or poor 
connections. If the connections are good, check the battery condition (see BATTERY TEST ) and the 
charging system (see ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING ). 

4. Check for Adaptive Cruise Control System DTCs with the HDS. 

Are any DTCs indicated?  

YES - Go to the INDICATED DTCS TROUBLESHOOTING. 

NO - Go to step 5. 

5. Do the gauge control module input test (see GAUGE CONTROL MODULE INPUT TEST ). 

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions 
in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN 
SYSTEM DIAGNOSIS TEST MODE A ).

 

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Are all inputs OK?  

YES - Go to step 6. 

NO - Repair the faulty input, then recheck for DTCs. 

6. Substitute a known-good gauge control module.  

7. Clear the DTCs with the HDS.  

8. Turn the ignition switch OFF, and then back ON (II).  

9. Check for DTCs with the HDS. 

Is DTC B1171 indicated?  

YES - Substitute a known-good adaptive cruise control unit, and recheck. 

NO - The original gauge control module is faulty; replace it (see GAUGE CONTROL MODULE 
REPLACEMENT ). 

DTC B1173: GAUGE CONTROL MODULE LOST COMMUNICATION WITH TPMS CONTROL 
UNIT (TPMS MESSAGE) 

1. Clear the DTCs with the HDS.  

2. Turn the ignition switch OFF, and then back ON (II).  

3. Check for DTCs with the HDS. 

Is DTC B1173 indicated?  

YES - Go to step 4. 

NO - Intermittent failure, the F-CAN communication line is OK at this time. Check for loose or poor 
connections. If the connections are good, check the battery condition (see BATTERY TEST ) and the 
charging system (see ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING ). 

4. Check for TPMS DTCs with the HDS. 

Are any DTCs indicated?  

YES - Go to the INDICATED DTCS TROUBLESHOOTING. 

NO - Go to step 5. 

5. Do the gauge control module input test (see GAUGE CONTROL MODULE INPUT TEST ). 

Are all inputs OK?  

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions 
in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN 
SYSTEM DIAGNOSIS TEST MODE A ).

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Gauges - RL

  

me 

 

Friday, June 05, 2009 3:33:40 PM

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© 2005 Mitchell Repair Information Company, LLC.