f-can ACURA CSX 2006 Service Owner's Guide

•••
´

(#'

)
TPMS Control Unit Inputs and Outputs for 20P Connector
Terminalnumber Wire color Terminal sign Description Signal
18-57
System Description
NOTE: Standard battery voltage is about 12 V.
2 WHT CAN H (F-CAN communication
signal high)F-CAN
communication
circuit Ignition switch ON (II): pulses
3 BLK GND (Ground) Ground for the TPMS control unitLess than 0.1 V at all times
7 LT BLU K-LINE (Data link connector)Communications
with the HDS
8 BRN IG1 (Ignition switch 1)Power source for
activating the
system Ignition switch ON (II): battery voltage
Ignition switch in LOCK (0): less than 0.1 V
10 BLU B (Battery positive)Power source for
the TPMS control
unit Battery voltage at all times
11 RED CAN L (F-CAN communication
signal low)F-CAN
communication
circuit Ignition switch ON (II): pulses
(cont’d)
Wire side of female terminals
08/08/21 14:58:24 61SNR030_180_0057
ProCarManuals.com
DYNOMITE -2009-

Î
System Structure
Control unit
Indicators
18-58TPMS
System Description (cont’d)
Vehicle
Indicators (LED)
Gauge Control Module (Tach)
Communication
via F-CAN
Control Unit
(with radio
frequency antenna)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor) Wheel
(TPMS type)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Wheel
(TPMS type)
Wheel
(TPMS type) Wheel
(TPMS type)
Once the vehicle speed exceeds 45 km/h (28 mph), the TPMS control unit monitors all four tire pressure sensors and
the system function. If it detects low pressure in a tire, it alerts the driver by turning on the low tire pressure indicator.
If it detects a problem in the system, it turns on the TPMS indicator.
Mounted inside of the dash, the TPMS control unit receives wireless pressure sensor ID signals
every time the vehicle
speeds exceeds 45 km/h (28 mph). It also receives wireless signals from the transmitters for tire pressure and the
sensor condition, and it continuously monitors and controls the system. The TPMS control unit cannot directly
determine the position (location) of a tire pressure sensor(s) on the vehicle since it is a wireless system. TPMS sensor
locations will change during scheduled vehicle maintenance (tire rotation).
NOTE: To determine the actual location of each TPMS wheel sensor on the vehicle, do the tire pressure sensor
location procedure (see page 18-53). Once the tire pressure sensor locations are identified, write the sensor ID on the
side wall of the tire with a tire crayon to eliminate confusion.
Two indicators are in the gauge control module (tach): The low tire pressure indicator comes on when any tire
pressure is low, and the TPMS indicator that comes on only if there’s a problem with the system.
The low tire pressure indicator alerts the driver that a tire(s) pressure is low, but does not specify the tire(s) location.
08/08/21 14:58:24 61SNR030_180_0058
ProCarManuals.com
DYNOMITE -2009-

(#' 
)(#' 
)
µ
µ
µ
µ µ
µ
µ
µ
µ
µ
DTC 83: DTC 85:
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
18-6918-69
No VSP Signal
F-CAN Communication Failure
NOTE: If DTC 85 stored at the same time as DTC 83,
troubleshoot DTC 85 first, then recheck for DTC 83.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle at 10 km/h (7 mph) or more.
4. Check the speedometer.
Go to step 5.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then go to
step 1 and recheck. If the ECM/PCM was updated
and DTCs are not indicated, troubleshooting is
complete. If the ECM/PCM was substituted and
DTCs are not indicated, replace the original ECM/
PCM (see page 11-228).
5. Check the VEHICLE SPEED in the TPMS DATA LIST with the HDS.
The system is OK at this time.
Substitute a known-good TPMS control unit
(see page 18-75), and recheck. NOTE: Check for fuel and emission systems DTCs with
the HDS, and troubleshoot the ECM/PCM and F-CAN
communication errors first (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn the ignition switch to ON (II) again.
4. Wait about 5 seconds.
5. Check for DTCs with the HDS.
Go to step 6.
The system is OK at this time.
6. Test-drive the vehicle.
Go to step 10.
Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the TPMS control unit 20P connector.
9. Test-drive the vehicle.
Check for loose terminals and poor
connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit
(see page 18-75), and recheck.
Turn the ignition switch to LOCK (0) and
reconnect all connectors, then check and
troubleshoot the fuel and emissions system
(see page 11-3).
(cont’d)
Does t he speed omet er r egi st er speed ?
Is t he v ehi cl e speed i nd i cat ed ? I s DT C 85 i nd i cat ed ?
Does t he speed omet er w or k ?
Does t he speed omet er w or k ?
08/08/21 14:58:59 61SNR030_180_0069
ProCarManuals.com
DYNOMITE -2009-

Diagnostic Trouble Code (DTC)
Self-diagnosis
Kickback
Pump Motor
Brake Fluid Replacement/Air BleedingHow to Troubleshoot DTCs
Intermittent Failures
19-50
ABS Components
General Troubleshooting Information (cont’d)
 The memory holds all DTCs. However, when the
same DTC is detected more than once, the more
recent DTC is written over the earlier one. Therefore,
when the same problem is detected repeatedly, it is
memorized as a single DTC.
 The DTCs are indicated in the order they occur.
 The DTCs are memorized in the EEPROM. Therefore, the memorized DTCs cannot be erased by
disconnecting the battery. Do the specified
procedures to clear the DTCs.
 Self-diagnosis can be classified into two categories: – Initial diagnosis: Done right after the ignition switch is turned to ON (II) and until the ABS indicator goes
off.
– Regular diagnosis: Done right after the initial diagnosis until the ignition switch is turned to
LOCK (0).
 When the system detects a problem, the ABS modulator-control unit shifts to fail-safe mode.
The pump motor operates when the ABS modulator-
control unit is functioning, and the fluid in the reservoir
is forced out to the master cylinder, causing kickback at
the brake pedal.  The pump motor operates when the ABS modulator- control unit is functioning.
 The ABS modulator-control unit checks the pump motor operation one time after completing initial
diagnosis during regular diagnosis when the vehicle
is driven over 15 km/h (10 mph).
Brake fluid replacement and air bleeding procedures
are identical to the procedures used on vehicles without
ABS (see page 19-9). The troubleshooting procedures assume that the cause
of the problem is still present, and the ABS indicator is
still on. Following a troubleshooting procedure for a
code that has been cleared but does not reset can result
in incorrect diagnosis.
1. Question the client about the conditions when the problem occurred, and try to reproduce the same
conditions for troubleshooting. Find out when the
ABS indicator came on, such as during activation,
after activation, when the vehicle was traveling at a
certainspeed,etc.Ifnecessary,havetheclient
demonstrate the concern.
2. When the ABS indicator does not come on during the test-drive, check for loose connectors, poor
contact of the terminals, etc. in the circuit indicated
by the DTC before you start troubleshooting.
3. After troubleshooting, or the repairs are done, clear the DTCs, and test-drive the vehicle under the same
conditions that originally set the DTCs. Make sure
the ABS indicator does not come on.
4. Check for DTCs from other systems which are connected via F-CAN. If there are DTCs that are
related to F-CAN, one possible cause was that the
ignition switch was turned to ON (II) with the ABS
modulator-control unit connector disconnected.
Clear the DTCs. Check for fuel and emissions DTC’s
first.
NOTE: Always troubleshoot fuel and emissions
DTC’s first.
The term ‘‘intermittent failure’’ means a system may
have had a failure, but it checks OK now. If you cannot
reproduce the condition, check for loose connectors or
terminal pins related to the circuit that you are
troubleshooting.
08/08/21 15:02:15 61SNR030_190_0050
ProCarManuals.com
DYNOMITE -2009-

DTCDetection Item ABS Indicator Brake System
Indicator Note
19-54ABS Components
DTC Troubleshooting Index (cont’d)
71 -21 Right-front or Left-rear Different Diameter Tire Malfunction
ONON (see page 19-83)
-22 Left-front or Right-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-23 Right-front and Right-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-24 Left-front and Left-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-25 Right-front and Left-front Different Diameter Tire Malfunction ONON (see page 19-83)
-26 Right-rear and Left-rear Different Diameter Tire Malfunction ONON (see page 19-83)
81 -01 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-05 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-06 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-08 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-11 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-14 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-23 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-30 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-31 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-32 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-51 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-52 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-71 Central Processing Unit (CPU) Internal Circuit Malfunction ONOFF (see page 19-84)
86 -01 F-CAN Bus-off Malfunction OFFOFF (see page 19-85)
-24 F-CAN Communication with Engine Malfunction OFFOFF (see page 19-86)
-25 F-CAN Communication with Engine Malfunction OFFOFF (see page 19-86)
-FF F-CAN Communication with ABS Malfunction OFFOFF (see page 19-87)
08/08/21 15:02:16 61SNR030_190_0054
ProCarManuals.com
DYNOMITE -2009-

(#'
)
Symptom Diagnostic procedure
19-55
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
HDS does not communicate with the ABS
modulator-control unit or the vehicle Troubleshoot the DLC circuit (see page 11-204).
ABS indicator and brake system indicator
do not come on 1.
2.Do the gauge control module troubleshooting (see page 22-241).
Substitute a known-good ABS modulator-control unit, then
recheck. If it is OK, replace the original ABS modulator-control
unit (see page 19-90).
ABS indicator and brake system indicator
do not go off 1.
2.
3.Check for F-CAN DTCs, and troubleshoot and repair those first.
Symptom troubleshooting (see page 19-88).
Do the gauge control module troubleshooting (see page 22-241).
08/08/21 15:02:16 61SNR030_190_0055
ProCarManuals.com
DYNOMITE -2009-

•••
´
´ ´
´

(#'
)

ABS Modulator-control Unit Inputs and Outputs for 25P Connector (Connector Disconnected)
TerminalnumberWire color Terminal sign Description Signal
19-56ABS Components
System Description
NOTE: Standard battery voltage is about 12 V.
1 WHT CAN-H F-CAN communication circuit
2 GRN FR B Detects right-front wheel speed sensor signal
3 RED FL-GND Detects left-front wheel speed sensor signal
5 PUR RL-GND Detects left-rear wheel speed sensor signal
6 LT GRN RR B Detects right-rear wheel speed sensor signal
8 WHT FSR B Power source for the fail-safe relay Battery voltage at all times
9 RED MR B Power source for the motor relay Battery voltage at all times
Wire side of female terminals
08/08/21 15:02:17 61SNR030_190_0056
ProCarManuals.com
DYNOMITE -2009-

•••
´
´
•••
TerminalnumberWire color Terminal sign Description Signal
19-57
NOTE: Standard battery voltage is about 12 V.
10 LT BLU K-LINE Communication with HDS
12 WHT FL B Detects left-front wheel speed sensor signal
14 YEL RL B Detects left-rear wheel speed sensor signal
15 BLU RR-GND Detects right-rear wheel speed sensor signal
16 YEL GRY IG1 Power source for activating the
system With ignition switch ON (II): about battery
voltage
17 RED CAN-L F-CAN communication circuit
18 PNK FR-GND Detects right-front wheel speed sensor signal
24 BLK GND Ground for the ABS modulator- control unit Continuity to ground
25 BLK MR-GND Ground for the pump motor Continuity to ground
*1: ’06 model
*2: ’07 model
(cont’d)
*1*2
08/08/21 15:02:17 61SNR030_190_0057
ProCarManuals.com
DYNOMITE -2009-


System Outline
19-58ABS Components
System Description (cont’d)
ECM/PCM
WHEEL SPEED SENSORS
Control mode signal
Indicators drive signal  Brake pedal position switch signal
 Service check signal
Wheel rotation pulse signal
CONTROL UNIT
MODULATOR UNIT ABS MODULATOR-
CONTROL UNIT
 Solenoid control
 Motor control
Communication via F-CAN
PARKING
BRAKE
SWITCH
BRAKE
FLUID
LEVEL
SWITCH BRAKE
PEDAL
POSITION
SWITCH
GAUGE CONTROL MODULE (TACH)
This system is composed of the ABS modulator-control unit, the wheel speed sensors, and the system indicators in
the gauge control module (tach). The ABS modulator-control unit controls the anti-lock brake and the brakes
distribution function.
08/08/21 15:02:17 61SNR030_190_0058
ProCarManuals.com
DYNOMITE -2009-


(#' 
'
)
µ
µ
µ
µ
DTC 86-01:
YES
NO Sign ECM/PCM
Connector A
(44P) Terminal
YES
NO
ABS Modulator-
control Unit 25P
Connector Terminal
19-85
CAN-H (WHT)
CAN-L (RED)
ECM/PCM CONNECTOR A (44P) CAN-L (RED)
CAN-H (WHT) ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
F-CAN Bus-off Malfunction
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals between ECM/PCM
connector A (44P) and the ABS modulator-control
unit 25P connector. Refer to intermittent failures
troubleshooting (see page 19-50).
5. Turn the ignition switch to LOCK (0).
6. Short the SCS line with the HDS.
7. Disconnect ECM/PCM connector A (44P).
8. Disconnect the ABS modulator-control unit 25P connector (see step 2 on page 19-90). 9. Check for continuity between ABS modulator-
control unit 25P connector terminal and ECM/PCM
connector A (44P) terminal (see table).
CAN-L No. 17 No. 37
CAN-H No. 1 No. 36
Check for loose terminals in the ABS
modulator-control unit 25P connector. If necessary,
substitute a known-good ABS modulator-control
unit (see page 19-90), and retest.
Repair open in the wire between the ECM/
PCM and the ABS modulator-control unit.
Wire side of female terminals
Terminal side of female terminalsIs DTC 86-01 indicated? Is there continuity?
08/08/21 15:03:16 61SNR030_190_0085
ProCarManuals.com
DYNOMITE -2009-