Acura RL. Manual - part 474

OIL PRESSURE SWITCH TEST 

1. Remove the YEL/RED wire (A) from the oil pressure switch (B). 

Excessive engine oil 
consumption

and oil filter are tight.  

2. Check for oil leaks.  

3. Check for worn valve guide(s) (see VALVE 

INSPECTION ) or worn valve stem seal(s) 
(see VALVE, SPRING, AND VALVE 
SEAL REMOVAL ).  

4. Check for damaged or worn piston ring(s) 

(see PISTON RING REPLACEMENT ).  

5. Check for damaged or worn engine internal 

parts (cylinder wall, pistons, etc.) (see 
BLOCK AND PISTON INSPECTION ).  

 

Low oil pressure 
indicator does not come 
on with the ignition 
switch ON (II)

1. Do the gauge control module self-diagnostic 

function (see SELF-DIAGNOSTIC 
FUNCTION ).  

2. Test the oil pressure switch (see OIL 

PRESSURE SWITCH TEST ).  

An open in the wire 
between the gauge 
control module and the 
oil pressure switch

Low oil pressure 
indicator stays on

1. Check the engine oil level.  

2. Do the gauge control module self-diagnostic 

function (see SELF-DIAGNOSTIC 
FUNCTION ).  

3. Test the oil pressure switch (see OIL 

PRESSURE SWITCH TEST ).  

4. Check the engine oil pressure (see OIL 

PRESSURE TEST ).  

5. Check the oil filter for clogging.  

6. Check the oil screen for clogging.  

7. Check the relief valve.  

8. Test the oil pump (see OIL PUMP 

OVERHAUL ).  

A wire shorted to 
ground between the 
gauge control module 
and the oil pressure 
switch

 

2007 Acura RL 

2005-08 ENGINE Engine Lubrication - RL

  

me 

 

Friday, June 05, 2009 3:14:20 PM

Page 4 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 4: Identifying Oil Pressure Switch And Connector 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Check for continuity between the positive terminal (C) and the engine (ground). There should be 

continuity with the engine stopped. There should be no continuity with the engine running.  

OIL PRESSURE SWITCH REPLACEMENT 

1. Disconnect the oil pressure switch connector, then remove the oil pressure switch. 

Fig. 5: Identifying Oil Pressure Switch With Torque Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Remove any old liquid gasket from the switch and switch mounting hole.  

3. Apply a very small amount of liquid gasket to the oil pressure switch threads, then install the oil 

pressure switch. 

NOTE:

Using too much liquid gasket may cause liquid gasket to enter the oil 

 

2007 Acura RL 

2005-08 ENGINE Engine Lubrication - RL

  

me 

 

Friday, June 05, 2009 3:14:20 PM

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© 2005 Mitchell Repair Information Company, LLC. 

OIL PRESSURE TEST 

If the low oil pressure indicator stays on with the engine running, check the engine oil level. If the oil level 
is correct: 

1. Remove the oil pressure switch, then install an oil pressure gauge (A). 

Fig. 6: Identifying Oil Pressure Gauge 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem 

before continuing.  

3. Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should 

be: 

Engine Oil Temperature: 176°F (80°C)  

Engine Oil Pressure:  

At Idle: 70 kPa (0.7 kgf/cm

2

 , 10 psi) min. 

 

At 3,000 RPM: 490 kPa (5.0 kgf/cm

2

 , 71 psi) min. 

 

4. If oil pressure is out of specifications, inspect these items: 



Replace the oil filter (see ENGINE OIL FILTER REPLACEMENT ).  



Inspect the oil pressure relief valve (see OIL PUMP OVERHAUL ).  



Check the oil screen for clogging.  



Inspect the oil pump (see OIL PUMP OVERHAUL ).  

ENGINE OIL REPLACEMENT 

1. Warm up the engine.  

passage or the end of the new oil pressure switch.

 

2007 Acura RL 

2005-08 ENGINE Engine Lubrication - RL

  

me 

 

Friday, June 05, 2009 3:14:20 PM

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© 2005 Mitchell Repair Information Company, LLC. 

2. Remove the drain bolt (A), and drain the engine oil. 

Fig. 7: Identifying Engine Oil Drain Bolt With Torque Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Reinstall the drain bolt with a new washer (B).  

4. Refill with the recommended oil (see LUBRICANTS AND FLUIDS ). 

Capacity  

At Oil Change:  

4.0 L (4.2 US qt)  

At Oil Change including Filter:  

4.3 L (4.5 US qt)  

After Engine Overhaul:  

5.0 L (5.3 US qt)  

Fig. 8: Filling Engine Oil 

 

2007 Acura RL 

2005-08 ENGINE Engine Lubrication - RL

  

me 

 

Friday, June 05, 2009 3:14:20 PM

Page 7 

© 2005 Mitchell Repair Information Company, LLC.