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Acura CSX. Manual - part 372

０１

ＳＮＲ９Ａ０ＪＢ５４１７５１０００００ＦＡＡＴ０４

−

YES

Low tire pressure indicator does not go off,
and no DTCs are stored

18-72

TPMS

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 ther e batter y voltage?

Did the indicator come on, and then go of f ?

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ＳＮＲ９Ａ０ＪＢ５４１７５１０００００ＦＡＡＴ０６

−

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

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

YES

18-73

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 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.

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 seconds

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.

Did the indicator come on?

Did the indicator come on, and then go of f ?

Is the f use blown?

08/08/21 14:59:00 61SNR030_180_0073

０２

０３

０４

＋

−

YES

18-74

TPMS

TPMS CONTROL UNIT 20P CONNECTOR

B (BLU)

TPMS CONTROL UNIT 20P CONNECTOR

IG1 (BRN)

TPMS CONTROL UNIT 20P CONNECTOR

GND (BLK)

7. Measure the voltage between body ground and

TPMS control unit 20P connector terminal No. 10.

Go to step 8.

Repair open in the wire between the TPMS

control unit and the No. 7 (7.5 A) fuse in the under-
dash fuse/relay box.

8. Turn the ignition switch to ON (II).

9. Measure the voltage between body ground and

TPMS control unit 20P connector terminal No. 8.

Go to step 10.

Repair open in the wire between the TPMS

control unit and the No. 10 (7.5 A) fuse in the under-
dash fuse/relay box.

10. Turn the ignition switch to LOCK (0).

11. Reconnect the TPMS control unit 20P connector.

12. Turn the ignition switch to ON (II).

13. Measure the voltage between body ground and

TPMS control unit 20P connector terminal No. 3.

Repair open or high resistance in the wire

between the TPMS control unit and body ground
(G504).

Do the troubleshooting for the gauge control

module (see page 22-241). If the gauge control
module (tach) is OK, 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.

Wire side of female terminals

Is ther e batter y voltage?

Is ther e 0.1 V or mor e?

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＊０１

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18-75

TPMS Control Unit Replacement

6 x 1.0 mm
9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

NOTE: Make sure the TPMS control unit mounting
bracket is not bent or twisted as this may affect its
communication with the tire pressure sensors.

1. Turn the ignition switch to LOCK (0).

2. Remove the driver’s dashboard undercover

(see page 20-103).

3. Disconnect the TPMS control unit connector (A).

4. Remove the TPMS control unit (B) from the bracket

(C).

NOTE: To disconnect the TPMS control unit from its
bracket, insert a small flat-tipped screwdriver
between the TPMS control unit and the bracket
shown in (D) to release the hook, then slide out the
TPMS unit.

5. Replace the bracket if necessary.

6. Install the new TPMS control unit in the reverse

order of removal.

NOTE: Make sure the TPMS control unit is properly
installed. You will hear a click when the TPMS
control unit is securely mounted on the bracket.

7. Connect the HDS, and memorize the tire pressure

sensor IDs using the TPMS sensor initializer tool
(see page 18-52).

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