Acura RL. Manual - part 74

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART 

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

The IGP terminal voltage is 12.0 V or less, and the alternator power generation amount is 0.5% or less for at 
least 60 seconds. 

Driving Pattern 

1. Start the engine.  

2. Maintain an engine speed of 500 rpm to 3,000 rpm.  

3. Turn on the headlights (high beam) and rear window defogger.  

Diagnosis Details 

Conditions for illuminating the indicator 

When a malfunction is detected, the DTC and the freeze frame data are stored in the PCM memory. The 
MIL does not come on. 

Conditions for clearing the DTC 

The DTC and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P16BD (198): ADVANCED DIAGNOSTICS 

DTC P16BD: STARTER RELAY 2 MALFUNCTION 

Execution

Continuous

Sequence

None

Duration

60 seconds or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

Minimum

Maximum

Engine speed

500 rpm

3,000 rpm

Alternator control mode

14.5 V mode

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:06 PM

Page 293  © 2005 Mitchell Repair Information Company, LLC. 

Fig. 242: Starter Relay 2 - Circuit Diagram 

General Description 

To prevent the starter from continuing to rotate due to a switching failure of the starter cut relay, two starter 
cut relays are connected in series. 

When the input voltage of the STRLD terminal drops to a set voltage even when the starter cut relay output 
(STRLY) is turned off, the PCM detects a malfunction of the starter cut relay 2 (ST CUT) and a DTC is 
stored. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION CHART 

Enable Conditions 

ENABLE CONDITIONS 

Execution

Continuous

Sequence

None

Duration

5 seconds or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

 

Ignition switch

ON

State of the engine

Running

Starter switch

OFF

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:06 PM

Page 294  © 2005 Mitchell Repair Information Company, LLC. 

Malfunction Threshold 

The terminal voltage of the STRLD drops to 2.2 V for at least 5 seconds when the starter cut relay output is 
turned off. 

Diagnosis Details 

Conditions for illuminating the indicator 

When a malfunction is detected, the DTC and the freeze frame data are stored in the PCM memory. The 
MIL does not come on. 

Conditions for clearing the DTC 

The DTC and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P16BE (198): ADVANCED DIAGNOSTICS 

DTC P16BE: STARTER RELAY 1 MALFUNCTION 

Fig. 243: Starter Relay 1 - Circuit Diagram 

General Description 

To prevent the starter from continuing to rotate due to a switching failure of the starter cut relay, two starter 
cut relays are connected in series. 

No active DTCs

P16BE

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:06 PM

Page 295  © 2005 Mitchell Repair Information Company, LLC. 

When the input voltage of the STRLD terminal exceeds a set voltage even when the starter cut relay output 
(STRLY) is turned off, the PCM detects the starter cut relay 1 turn on switching failure and a DTC is stored.

When the starter is turned on, but the STRLD terminal input voltage does not exceed the upper or lower 
limit, a simultaneous failure of both starter cut relays or the STRLD open circuit is detected. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION CHART 

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

One of these conditions occurs: 



The terminal voltage of the STRLD exceeds 3.0 V for at least 5 seconds when the starter cut relay 
output is turned off.  



The terminal voltage of the STRLD is 2.4 V to 2.6 V for at least 0.8 seconds when the starter cut relay 
output is turned on.  

Diagnosis Details 

Conditions for illuminating the indicator 

When a malfunction is detected, the DTC and the freeze frame data are stored in the PCM memory. The 
MIL does not come on. 

Conditions for clearing the DTC 

The DTC and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P16BF (198): ADVANCED DIAGNOSTICS

Execution

Continuous

Sequence

None

Duration

5 seconds or more (Starter cut relay turn on switching failure) 
0.8 seconds or more (STRLD open circuit failure)

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

 

Ignition switch

ON

State of the engine

Running

Starter switch

OFF (Starter cut relay turn on switching failure) 
ON (STRLD open circuit failure)

No active DTCs

P16BD

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:06 PM

Page 296  © 2005 Mitchell Repair Information Company, LLC.