2006 ACURA CSX relay



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DTC 34-02:
YES
NO
YES
NO
YES
NO
17-45
EPS CONTROL UNIT CONNECTOR B (2P)H-W (GRN)
EPS CONTROL UNIT CONNECTOR C (2P) H-U (RED) H-V (BLU)
Fail-safe Relay Stuck ON (Initial
Diagnosis)
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Turn the ignition switch to ON (II).
Go to step 5.
Check for loose terminals or poor connections.
If the connections are good, the system is OK at
this time.
5. Check for DTCs with the HDS.
Go to step 6.
Troubleshoot the indicated DTC. If there are
no DTCs, the system is OK at this time.
6. Turn the ignition switch to LOCK (0).
7. Disconnect EPS control unit connector B (2P) and connector C (2P).
8. Turn the ignition switch to ON (II). 9. Measure the voltage between body ground and
EPS control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.
Repair short to power in the wire between
the EPS control unit and the EPS motor.
Replace the EPS control unit (see page 17-84).
Wire side of female terminals
Wire side of female terminals
Does t he E PS i nd i cat or come on? Is DTC 34-02 indicated?
Is there battery voltage?
08/08/21 14:54:34 61SNR030_170_0046
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DYNOMITE -2009-

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EPS indicator does not come on EPS indicator does not go off, and no DTCs
are stored
YES
NO
YES
NO
YES
NO
17-6017-60EPS Components
Symptom Troubleshooting
EPS CONTROL UNIT CONNECTOR D (28P)
IG1 (YEL)* (GRY)*
*1: ’06 model
*2: ’07-09 models
12
1. Turn the ignition switch to ON (II), and watch the EPS indicator.
The system is OK at this time.
Troubleshoot the gauge control module (tach)
(see page 22-241). NOTE: Check for gauge DTCs with the HDS (see page
22-3). If gauge DTCs are stored, troubleshoot those
DTCs first.
1. Turn the ignition switch to LOCK (0).
2. Check the No. 4 (7.5 A) fuse in the under-dash fuse/ relay box.
Reinstall the checked fuse, then go to step 5.
Go to step 3.
3. Disconnect EPS control unit connector D (28P).
4. Check for continuity between EPS control unit connector D (28P) terminal No. 16 and body ground.
Repair short to body ground in the wire
between the EPS control unit and the No. 4 (7.5 A)
fuse in the under-dash fuse/relay box.
Install a new No. 4 (7.5 A) fuse in the under-
dashfuse/relaybox,thengotostep5.
Wire side of female terminals
Does t he E PS i nd i cat or come on?
IsthefuseOK?
Is there continuity?
08/08/21 14:55:07 61SNR030_170_0061
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DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
17-61
EPS CONTROL UNIT CONNECTOR D (28P)
IG1 (YEL)* (GRY)*
*1: ’06 model
*2: ’07-09 models EPS CONTROL UNIT CONNECTOR A (2P)
PG (BLK)
12
5. Reconnect EPS control unit connector D (28P).
6. Turn the ignition switch to ON (II), and watch theEPS indicator.
Troubleshooting is complete.
Replace the EPS control unit (see page 17-84).
7. Disconnect EPS control unit connector D (28P).
8. Turn the ignition switch to ON (II).
9. Measure the voltage between EPS control unit connector D (28P) terminal No. 16 and body ground.
Go to step 10.
Repair open in the wire between the EPS
control unit and under-dash fuse/relay box.
10. Turn the ignition switch to LOCK (0).
11. Disconnect EPS control unit connector A (2P). 12. Check for continuity between EPS control unit
connector A (2P) terminal No. 1 and body ground.
Go to step 13.
Repair open in the wire between the EPS
control unit and body ground (G 402).
(cont’d)
Wire side of female terminals Wire side of female terminals
Does the EPS indicator come on, then go of f ?
Is there battery voltage? Is there continuity?
08/08/21 14:55:07 61SNR030_170_0062
ProCarManuals.com
DYNOMITE -2009-

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18-48TPMS
Component Location Index
TIRE PRESSURE SENSOR
DATA LINK CONNECTOR (DLC) UNDER-DASH FUSE/RELAY BOX
TPMS CONTROL UNIT
TIRE PRESSURE SENSOR
TIRE PRESSURE SENSOR
TIRE PRESSURE SENSOR UNDER-HOOD FUSE/RELAY BOX
Replacement, page 18-76 Replacement, page 18-75
Replacement, page 18-76
Replacement, page 18-76
Replacement, page 18-76
08/08/21 14:58:21 61SNR030_180_0048
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DYNOMITE -2009-


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´
18-61
Circuit Diagram
BATTERYUNDER-HOOD
FUSE/RELAY BOX
G1
H1WHT 36
IGNITION SWITCH
No. 10
(7.5 A)
No. 2
(60 A)
No. 2
(50 A)
No. 1
(100 A)
No. 7
(7.5 A)
UNDER-DASH
FUSE/RELAY BOX
G19
D2
TPMS INDICATOR ECM/PCM WHT
RED
WHT
RED
BLK TPMS CONTROL UNIT
CAN
CONTROLLER
RED WHT RED WHT
VOLTAGE
REGULATOR8
10 IG1
B BRN
3
GND BLK
G502 G504 K-LINE
:12V
:5V
CAN H
CAN L
IG1
POWER CIRCUIT
INDICATOR
DRIVER
CIRCUIT IG1 HOT in ON (II) and START (III)
DATA LINK
CONNECTOR (DLC) LT BLUBLU
RED
BLU
2
11
LOW TIRE PRESSURE
INDICATOR
GAUGE CONTROL MODULE (TACH)
1
A36
A37 19
6
14 7
4 7Q10
Q9
MICU
(cont’d)
08/08/21 14:58:58 61SNR030_180_0061
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DYNOMITE -2009-


18-62TPMS
Circuit Diagram (cont’d)
DATA LINK CONNECTOR (DLC)
TPMS CONTROL UNIT 20P CONNECTOR
UNDER-DASH FUSE/RELAY BOX CONNECTOR Q (16P)
ECM/PCM CONNECTOR A (44P) GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
Wire side of female terminals
Terminal side of female terminals Wire side of female terminals
Wire side of female terminals
Terminal side of female terminals
08/08/21 14:58:58 61SNR030_180_0062
ProCarManuals.com
DYNOMITE -2009-


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YES
NO YES
NO
Low tire pressure indicator does not go off,
andnoDTCsarestored
18-7218-72TPMS
Symptom Troubleshooting (cont’d)
TPMS CONTROL UNIT 20P CONNECTOR
GND (BLK) IG1 (BRN)
8. Disconnect the TPMS control unit 20P connector.
9. Measure the voltage between TPMS control unit
20P connector terminals No. 3 and No. 8.
Repair short to power in the wire between
the TPMS control unit and the No. 10 (7.5 A) fuse in
the under-dash fuse/relay box.
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. 1. Turn the ignition switch to LOCK (0).
2. Disconnect the TPMS control unit 20P connector.
3. Turn the ignition switch to ON (II).
4. Check the low tire pressure indicator for several
seconds when the ignition switch is turned ON (II).
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.
Do the troubleshooting for the gauge control
module (see page 22- 241). If necessary, substitute a
known-good gauge control module (tach) (see page
22-277), and recheck.
Wire side of female terminals
Is there battery voltage? Di d t he i nd i cat or come on, and t hen go of f ?
08/08/21 14:59:00 61SNR030_180_0072
ProCarManuals.com
DYNOMITE -2009-

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TPMS indicator does not come on, and no
DTCs are stored TPMS indicator does not go off, and no DTCs
are stored
YES
NO YES
NO
YES
NO
YES
NO
18-7318-73
1. Turn the ignition switch to LOCK (0).
2. Disconnect the TPMS control unit 20P connector.
3. Turn the ignition switch to ON (II).
4. Check the TPMS indicator for several sec
onds
when the ignition switch is turned ON (II).
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.
Do the troubleshooting for the gauge control
module (see page 22- 241). If necessary, substitute a
known-good gauge control module (tach) (see page
22-277), and recheck. NOTE: Check for gauge DTCs with the HDS (see page
22-6). If gauge DTCs are stored, troubleshoot those
DTCs first.
1. Turn the ignition switch to ON (II).
2. Check the TPMS indicator for several sec onds
when the ignition switch is turned ON (II).
The system is OK at this time.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 7 (7.5 A) fuse in the under-dash fuse/ relay box.
Replace the No. 7 (7.5 A) fuse, and recheck. If
the fuse blows again, check for a short to body
ground in the wire between the TPMS control unit
and the No. 7 (7.5 A) fuse in the under-dash fuse/
relay box.
Reinstall the checked fuse, then go to step 5.
5. Check the No. 10 (7.5 A) fuse in the under-dash fuse/relay box.
Replace the No. 10 (7.5 A) fuse, and recheck.
If the fuse blows again, check for a short to body
ground in the wire between the TPMS control unit
and the No. 10 (7.5 A) fuse in the under-dash fuse/
relay box.
Reinstall the checked fuse, then go to step 6.
6. Disconnect the TPMS control unit 20P connector.
(cont’d)
Di d t he i nd i cat or come on? Di d t he i nd i cat or come on, and t hen go of f ?
Isthefuseblown?
Isthefuseblown?
08/08/21 14:59:00 61SNR030_180_0073
ProCarManuals.com
DYNOMITE -2009-