Acura CSX. Instruction — page 24

SNR9A00A14500000000HBAT01

Symptom

Diagnostic procedure

Also check for

4-44

Cruise Control

Symptom Troubleshooting Index

Cruise control cannot be
set

1.
2.

3.

4.

Check for PGM-FI DTCs (see page 11-3).
Check the No. 3 (10 A) fuse in the under-dash fuse/relay
box.
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).

Poor ground G101 (A/T
model) or G401 (M/T
model)

Cruise control can be set,
but the cruise main
indicator does not come
on

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the gauge control module self-diagnostic function
procedure (see page 22-241).
Do the cruise control input test (see page 4-47).
Test the cruise control main switch signal input.

Faulty gauge control
module (tach)

Cruise control can be set,
but the cruise control
indicator does not come
on

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the gauge control module self-diagnostic function
procedure (see page 22-241).
Do the cruise control input test (see page 4-47).
Test the cruise control indicator signal input.

Faulty gauge control
module (tach)

Vehicle does not
accelerate accordingly
when the resume/accel
button is pressed

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control resume/accel switch signal input.

Open circuit, loose or
disconnected terminal:
ORN

Set speed does not
cancel when the brake
pedal is pressed

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the brake pedal position switch test (see page
22-181).
Do the cruise control input test (see page 4-47).
Test the brake pedal position switch signal input.

Short to power on
the BRN wire
Faulty brake pedal
position switch

Set speed does not
cancel (engine rpm stays
high) when the clutch
pedal is pressed (M/T
model)

1.
2.
3.

Check for PGM-FI DTCs (see page 11-3).
Do the clutch pedal position switch test (see page 4-50).
Do the cruise control input test (see page 4-47).
Test the clutch pedal position switch signal input.

Short to ground in
the LT BLU wire
Faulty clutch pedal
position switch

Set speed does not
cancel when the cruise
control main button is
pressed

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control main switch signal input.

Short to power on the
YEL wire

Set speed does not
cancel when the cancel
button is pressed

1.
2.

3.

Check for PGM-FI DTCs (see page 11-3).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control cancel switch signal input.

Open circuit, loose or
disconnected
terminals: LT GRN or
ORN

Symptom

Diagnostic procedure

Also check for

4-45

Set speed does not
resume when the
resume/accel button is
pressed (with the cruise
control main button
pressed on, and set
speed temporarily
canceled by pressing the
brake pedal)

1.
2.

3.

4.

Check for PGM-FI DTCs (see page 11-3).
Check the brake pedal position switch adjustment
(see page 19-6).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control resume/accel switch signal input.
Test the brake pedal position switch signal input.

Open circuit, loose or
disconnected
terminal: ORN
Faulty brake pedal
position switch

Set speed does not
resume when the
resume/accel button is
pressed (with the cruise
control main button
pressed on, and set
speed temporarily
canceled by pressing the
clutch pedal) (M/T model)

1.
2.

3.

4.

Check for PGM-FI DTCs (see page 11-3).
Check the clutch pedal position switch adjustment
(see page 12-8).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control resume/accel switch signal input.
Test the clutch pedal position switch signal input.

Open circuit, loose or
disconnected
terminal: ORN
Faulty clutch pedal
position switch

With the ignition switch
in ON (II), and the lighting
switch turned on, the
cruise control
combination switch
illumination does not
come on

Check the cruise control combination switch (see page 4-49).

*01

SNR9A00A14500000000EAAT00

4-46

Cruise Control

Circuit Diagram

(A/T model)

7

6

4

5

12

G504

11

3

LIGHTS

CRUISE CONTROL INDICATOR

C21

C20

C12

12 V

5 V

C4

G401

3

2

C1

A20

3

2

4

1

(50 A)

No. 2

No. 19 (15 A)

No. 21 (15 A)

A8

A6

C43

B28

GRY

ORN

ECM/PCM

A37

A36

BAT

IG1

A39

A40

C39

C3

A41

THROTTLE BODY

TP SENSOR

No. 3
(10 A)

CRUISE MAIN INDICATOR

DRIVER

GAUGE CONTROL MODULE (TACH)

No. 12
(15 A)

UNDER-HOOD FUSE/RELAY BOX

BATTERY

No. 1 (100 A)

CPU

IG1 HOT in
ON (II) and
START (III)

CABLE
REEL

CAN-
CEL

RESUME/
ACCEL

CABLE
REEL

THROTTLE
ACTUATOR

BRAKE
PEDAL
POSITION
SWITCH

MULTIPLEX
INTEGRATED
CONTROL UNIT

TRANSMISSION
RANGE SWITCH

SET/
DECEL

CRUISE
CONTROL
MAIN

CRUISE CONTROL
DIMMING CIRCUIT

PGM-FI
MAIN
RELAY 1

ETCS
CONTROL
RELAY

UNDER-DASH
FUSE/RELAY
BOX

HORN
SWITCH

CRUISE CONTROL
COMBINATION SWITCH

IGNITION
SWITCH

IG1ETCS

ETCSRLY

IGP

MRLY

CANL

CANH

BKSWNC

BKSW

TPSB

TPSA

VCC3

ETCSM

NC

ATPFWD

SG3

ETCSM

CRMTCLS

D8

H1

F9

F6

F5

E1

3

6

1

9

10

11

14

OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR

CLUTCH
PEDAL
POSITION
SWITCH

No. 14 (7.5 A) FUSE
(UNDER-DASH
FUSE/RELAY BOX)

YEL

WHT

BLU

YEL

LT BLU

BLK

LT GRN

ORN

RED

LT GRN

BRN

ORN

GRN

WHT

WHT

YEL

RED

5 V

BLU/WHT

LT BLU

BLU/YEL

BLU

BLU/RED

GRN/YEL

GRN

RED/BLK

RED/BLU

BLK

WHT

D2

F5

4

2

3

1

3

2

4

1

1

10

6

7

9

8

2

21

18

C101

(M/T model)

CANL

CANH

19

SNR9A00A14500000000FCAT00

Signal to be

tested

Test condition

Parameter: Desired

result

Possible cause if result is not obtained

4-47

Cruise Control Input Test

NOTE: Always make sure that you have the latest Honda Diagnostic System (HDS) software before doing the input
tests.

1. Connect the HDS to the data link connector (DLC) (see step 2 on page 11-3).

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

3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control

module (PCM). If it does not communicate, troubleshoot the DLC circuit (see page 11-204).

4. Go to PGM-FI, and check for DTCs (see page 11-3).

5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.

NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs,
flex the circuit wires, and note if any of the test results change.








Brake pedal
position
switch signal

Brake pedal pressed,
then released

CRUISE BRAKE SW
should indicate OFF
when the brake pedal is
pressed and ON when
the brake pedal is
released.

Faulty brake pedal position switch
Blown No. 3 (10 A) fuse in the under-
dash fuse/relay box
An open in the wire between the ECM/
PCM and the brake pedal position switch
A wire shorted to ground between the
ECM/PCM and the brake pedal position
switch

Clutch pedal
position
switch signal
(M/T model)

Clutch pedal pressed,
then released

SHIFT/CLUTCH SW
should indicate ON
when the clutch pedal
is pressed and OFF
when the clutch pedal
is released.

Faulty clutch pedal position switch
An open in the wire between the ECM
and the clutch pedal position switch
A wire shorted to ground between the
ECM and the clutch pedal position
switch
Poor ground G401

Transmission
range switch
signal (A/T
model)

Shift lever in D and S

SHIFT/CLUTCH SW
should indicate ON in P,
R, and N, and OFF in D
and S.

Faulty transmission range switch
An open in the wire between the PCM
and the transmission range switch
A wire shorted to ground between the
PCM and the transmission range switch
Poor ground G101

Cruise control
main switch
signal

Cruise control main
switch pressed and
released

CRUISE MASTER
(MAIN) SW should
indicate ON when the
cruise control main
button is pressed and
OFF when the cruise
control main button is
released.

Faulty cruise control combination switch
Faulty gauge control module (tach)
An open in the wire between the gauge
control module (tach) and the cruise
control combination switch
A wire shorted to ground between the
gauge control module (tach) and the
cruise control combination switch
Poor ground G504

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