Acura RL. Manual - part 839

SYMPTOM TROUBLESHOOTING INDEX 

SYMPTOM TROUBLESHOOTING CHART 

32

Right-front tire pressure sensor transmitting failure

33

Left-front tire pressure sensor low battery voltage

34

Left-front tire pressure sensor transmitting failure

35

Right-rear tire pressure sensor low battery voltage

36

Right-rear tire pressure sensor transmitting failure

37

Left-rear tire pressure sensor low battery voltage

38

Left-rear tire pressure sensor transmitting failure

41

Abnormal signal reception error

45

Initiator circuit short detection

51

Right-front tire pressure sensor registration error

53

Left-front tire pressure sensor registration error

55

Right-rear tire pressure sensor registration error

57

Left-rear tire pressure sensor registration error

81

TPMS control unit failure 
(RAM/ROM/ADC/EEPROM/ALU) check

83

No VSP signal

85

F-CAN communication failure

91

Right-front tire pressure sensor internal error

93

Left-front tire pressure sensor internal error

95

Right-rear tire pressure sensor internal error

97

Left-rear tire pressure sensor internal error

Symptom

Diagnostic procedure

HDS does not communicate with the 
TPMS control unit or the vehicle

Troubleshoot the DLC circuit (see '08 MODEL )

Low tire pressure indicator does not 
come on, and no DTCs are stored 
('05-07 models)

Symptom Troubleshooting (see LOW TIRE PRESSURE 
INDICATOR DOES NOT COME ON, AND NO DTCS 
ARE STORED ('05-07 MODELS) )

Low tire pressure indicator does not 
come on, and no DTCs are stored ('08 
model)

Symptom Troubleshooting (see LOW TIRE PRESSURE 
INDICATOR DOES NOT COME ON, AND NO DTCS 
ARE STORED ('08 MODEL) )

Low tire pressure indicator does not 
go off, and no DTCs are stored ('05-
07 models)

Symptom Troubleshooting (see LOW TIRE PRESSURE 
INDICATOR DOES NOT GO OFF, AND NO DTCS ARE 
STORED ('05-07 MODELS) )

Low tire pressure indicator does not 
go off, and no DTCs are stored ('08 
model)

Symptom Troubleshooting (see LOW TIRE PRESSURE 
INDICATOR DOES NOT GO OFF, AND NO DTCS ARE 
STORED ('08 MODEL) )

TPMS indicator does not come on, 
and no DTCs are stored

Symptom Troubleshooting (see TPMS INDICATOR OR 
TIRE(S) INDICATOR(S) DOES NOT COME ON, AND 
NO DTCS ARE STORED )

TPMS indicator does not go off, and 
no DTCs are stored

Symptom Troubleshooting (see TPMS INDICATOR OR 
TIRE(S) INDICATOR(S) DOES NOT GO OFF, AND NO 
DTCS ARE STORED )

 

2007 Acura RL 

2005-08 SUSPENSION TPMS (Tire Pressure Monitoring System) - RL

  

me 

 

Friday, June 05, 2009 3:22:24 PM

Page 9 

© 2005 Mitchell Repair Information Company, LLC. 

SYSTEM DESCRIPTION 

TPMS CONTROL UNIT INPUTS AND OUTPUTS FOR CONNECTOR A (14P) 

Fig. 6: Identifying TPMS Control Unit Inputs And Outputs For Connector A (14P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

VOLTAGE TERMINAL CHART 

Terminal 

number

Wire 
color

Terminal sign 

(Terminal name)

Description

Measurement

Terminal

Conditions

Voltage

1

RED

+B (Battery 
positive)

Power source for 
the TPMS control 
unit

1-GND At all times

Battery 
voltage

3

BLK GND (Ground)

Ground for the 
TPMS control unit

3-GND At all times

Less than 
0.1V

5

YEL IG1 (Ignition 1)

Power source for 
activating the 
system

5-GND

Ignition switch ON 
(II)

Battery 
voltage

Ignition switch OFF

Less than 
0.1V

8

BRN

LF LF PWR. (LF 
low frequency 
power)

Power source for 
the left-front 
initiator

8-GND

For 5 seconds with 
ignition switch ON 
(II)

About 7 
V

After 5 seconds 

with ignition switch 

ON (II)

-

9

ORN

RF LF PWR. (RF 
low frequency 
power)

Power source for 
the right-front 
initiator

9-GND

For 5 seconds with 
ignition switch ON 
(II)

About 7 
V

After 5 seconds 

with ignition switch 

ON (II)

-

10

BRN

LR LF PWR. (LR 
low frequency 
power)

Power source for 
the left-rear 
initiator

10-GND

For 5 seconds with 
ignition switch ON 
(II)

About 7 
V

After 5 seconds 

with ignition switch 

ON (II)

-

11

PUR

RR LF PWR. (RR 
low frequency 
power)

Power source for 
the right-rear 
initiator

11-GND

For 5 seconds with 
ignition switch ON 
(II)

About 7 
V

After 5 seconds 

 

2007 Acura RL 

2005-08 SUSPENSION TPMS (Tire Pressure Monitoring System) - RL

  

me 

 

Friday, June 05, 2009 3:22:24 PM

Page 10 

© 2005 Mitchell Repair Information Company, LLC. 

TPMS CONTROL UNIT INPUTS AND OUTPUTS FOR CONNECTOR B (20P) 

Fig. 7: Identifying TPMS Control Unit Inputs And Outputs For Connector B (20P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

VOLTAGE TERMINAL CHART 

with ignition switch 

ON (II)

-

Terminal 

number

Wire 
color

Terminal sign 

(Terminal name)

Description

Measurement

Terminal

Conditions

Voltage

1

LTGRN

RF LF SIG. (RF 
low frequency 
signal)

Detects the signal 
from the right-front 
initiator

1-GND

For the first 5 
seconds after 
turning the ignition 
switch ON (II)

Pulses 0-
2 V

With ignition 

switch ON (II) for 

more than 5 

seconds

Less 
than 
0.1V

2

GRY

RR LF SIG. (RR 
low frequency 
signal)

Detects the signal 
from the right-rear 
initiator

2-GND

For the first 5 
seconds after 
turning the ignition 
switch ON (II)

Pulses 0-
2 V

With ignition 

switch ON (II) for 

more than 5 

seconds

Less 
than 
0.1V

3

GRY

LF LF SIG. (LF 
low frequency 
signal)

Detects the signal 
from the left-front 
initiator

3-GND

For the first 5 
seconds after 
turning the ignition 
switch ON (II)

Pulses 0-
2 V

With ignition 

switch ON (II) for 

more than 5 

seconds

Less 
than 
0.1V

4

PNK

LR LF SIG. (LR 
low frequency 
signal)

Detects the signal 
from the left-rear 
initiator

4-GND

For the first 5 
seconds after 
turning the ignition 
switch ON (II)

Pulses 0-
2 V

With ignition 

switch ON (II) for 

more than 5 

Less 
than 

 

2007 Acura RL 

2005-08 SUSPENSION TPMS (Tire Pressure Monitoring System) - RL

  

me 

 

Friday, June 05, 2009 3:22:24 PM

Page 11 

© 2005 Mitchell Repair Information Company, LLC. 

TPMS CONTROL UNIT INPUTS AND OUTPUTS FOR CONNECTOR B (20P) 

Fig. 8: Identifying TPMS Control Unit Inputs And Outputs For Connector B (20P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

VOLTAGE TERMINAL CHART 

SYSTEM STRUCTURE 

Whenever the engine is running, the TPMS control unit continuously monitors all four tires and the system. 
If it detects low pressure in a tire, it alerts the driver by turning on the low tire pressure indicator and the 
appropriate tire(s) indicator shown on the multi-information display. If it detects a problem in the system it 
turns on the TPMS indicator. 

Initiators 

Mounted on the top of each wheel well, each initiator sends a start/stop signal to the tire pressure sensor in 
the tire below it. 

Control unit 

Mounted under the rear shelf, the control unit sends signals to the initiators and receives signals from them 

seconds

0.1V

9

LTBLU

K-LINE (Data link 
connector)

Communications 
with HDS

-

-

-

10

BLK

CANL (CAN 
communication 
signal low)

Sends the 
communication 
signal

-

Ignition switch ON 
(II)

Pulses

Terminal 

number

Wire 
color

Terminal sign 

(Terminal name)

Description

Measurement

Terminal Conditions

Voltage

13

LT BLU

LF LF GND (LF low 
frequency ground)

Ground for the left-
front initiator

13-GND

Ignition 
switch ON (II)

Less than 
0.1V

14

PNK

RF LF GND (RF low 
frequency ground)

Ground for the 
right-front initiator

14-GND

Ignition 
switch ON (II)

Less than 
0.1V

15

GRN

LR LF GND (LR low 
frequency ground)

Ground for the left-
rear initiator

15-GND

Ignition 
switch ON (II)

Less than 
0.1V

16

LTGRN

RR LF GND (RR low 
frequency ground)

Ground for the 
right-rear initiator

16-GND

Ignition 
switch ON (II)

Less than 
0.1V

19

WHT

CANH (CAN 
communication signal 
high)

Sends the 
communication 
signal

-

Ignition 
switch ON (II)

Pulses

 

2007 Acura RL 

2005-08 SUSPENSION TPMS (Tire Pressure Monitoring System) - RL

  

me 

 

Friday, June 05, 2009 3:22:24 PM

Page 12 

© 2005 Mitchell Repair Information Company, LLC.