Inspection Procedure 6: When "ON/OFF"
Switch is Turned "ON", "CRUISE"
Indicator Light Inside Combination
Meter does not Illuminate (However,
Auto-cruise Control System is Normal).
................................

17b-44

DATA LIST REFERENCE TABLE. . . . .

17b-47

ECM TERMINAL VOLTAGE REFERENCE CHART
FOR AUTO-CRUISE CONTROL SYSTEM
OPERATION.....................

17b-49

SPECIAL TOOLS.................

17b-51

ON-VEHICLE SERVICE............

17b-52

AUTO-CRUISE CONTROL SYSTEM OPERATION
CHECK.........................

17b-52

AUTO-CRUISE CONTROL SWITCH CHECK
..............................

17b-55

STOPLIGHT SWITCH CHECK........

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TRANSMISSION RANGE SWITCH CHECK
..............................

17b-56

THROTTLE ACTUATOR CONTROL MOTOR
CHECK.........................

17b-56

17b-1

Continued on next page

AUTO-CRUISE CONTROL...........

17b-56

REMOVAL AND INSTALLATION......

17b-56

17b-2

GENERAL INFORMATION

M11702000001USA0000010000

By using the auto-cruise control, the driver can drive
at preferred speeds in a range of approximately 40 to
160 km/h (25 to 100 mph) without depressing the
accelerator pedal.

For this auto-cruise control system, in conjunction with
the electronic throttle valve control system, the engine
control module (ECM) electronically controls the
throttle valve.

CONSTRUCTION DIAGRAM

ZC601485

ZC601822

ZC601484

ZC601483

ZC601051

ZC601159

0001

Stoplight switch

Engine control
module (ECM)

Transmission
range switch

"CRUISE" indicator light

Transaxle
control module
(TCM)

Data link connector

Auto-cruise
control switch

Brake pedal
assembly

Bottom cover
assembly
(driver's side)

Throttle body
[Built-in
throttle position sensor
(TP sensor)
and
throttle actuator control motor
(TAC motor)]

Accelerator pedal
[Built-in accelerator
pedal position sensor
(APP sensor)]

AUTO-CRUISE CONTROL SYSTEM

17b-3

GENERAL INFORMATION

AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

M11702000033USA0000010000

The auto-cruise control system allows driving without
stepping on the accelerator pedal by setting a random
speed between 40 km/h (25 mph) and 160 km/h (100
mph). Malfunctions in this system can be investigated
by the following methods.

Auto-cruise control system diagnostic

trouble codes

The auto-cruise control system consists of the engine
control module (ECM), control switches and sensors.

The  switches  and  sensors  monitor  the  state  of  the
vehicle. The ECM controls the throttle valve opening
angle in the throttle body in accordance with the input
signals  from  the  switches  and  sensors.  If  the  ECM
detects a malfunction on any of those components,
the  ECM  estimates  where  the  problem  may  be
occurring,  and  will  set  a  diagnostic  trouble  code.
Diagnostic trouble codes cover the auto-cruise control
switch, stoplight switch and ECM.

DIAGNOSTIC TROUBLESHOOTING STRATEGY

M11702000020USA0000010000

Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will check most of the
possible causes of an auto-cruise control system
malfunction.

Gather information from the customer.

Verify that the condition described by the customer
exists.

Check the vehicle for any auto-cruise control
system DTC. (Refer to P.17b-5, Diagnostic
Function - How to Read Diagnostic Trouble Codes).

If you can verify the condition but no auto-cruise
control system DTCs are set, the malfunction may
be intermittent. (Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to
Cope with Intermittent Malfunctions P.00-15).

If you can verify the condition but there are no auto-
cruise control system DTCs, find the fault. (Refer
to P.17b-25, Symptom Chart).

If there is an auto-cruise control system DTC,
record the number of the code, then erase the code.
(Refer to P.17b-5, Diagnostic Function - How to
Erase Diagnostic Trouble Codes).

Re-create the auto-cruise control system DTC set
conditions  to  see  if  the  same  auto-cruise  control
system  DTC  will  set  again.  (Refer  to  P.17b-5,
Diagnostic  Function  -  How  to  Read  Diagnostic
Trouble Codes).

｠

If the same auto-cruise control system DTC sets
again, perform the diagnostic procedures for the
set code. (Refer to P.17b-7, Diagnostic
Trouble Code Chart).

17b-4

AUTO-CRUISE CONTROL SYSTEM

AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS

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