Mitsubishi Montero (1998+). Manual - part 80

 

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Mitsubishi Montero (1998+). Manual - part 80

 

 

         An open circuit in output signal circuit in Neutral range is

likely reason for malfunction. Probable causes are:

      *  Malfunction of park/neutral switch.

      *  Malfunction of connector.

      *  Malfunction of harness.

      *  Malfunction of cruise control ECU.

         Check condition of park/neutral switch connector B-08, dash

harness/transmission harness connector C-124, cruise control ECU

connector C-50 and joint connector C-130. Repair as necessary. If

connectors are okay and malfunction remains, check harness between

park/neutral switch and cruise control ECU. Repair as necessary. If

harness is okay, replace cruise control ECU.

         Test No. 6

         An open circuit in circuit inside CANCEL switch is likely

caused by a malfunction in cruise control switch. Replace cruise

control switch.

         Test No. 7

         Because of an open circuit in battery back-up circuit system,

fail-safe function prevents diagnostic trouble codes from being

memorized and displayed even though cruise control is canceled.

Probable causes are:

      *  Malfunction of connector.

      *  Malfunction of harness.

      *  Malfunction of cruise control ECU.

         1) Disconnect cruise control ECU connector C-50. See  Fig. 13.

At harness side of connector, measure voltage between terminal No. 16

and ground. If battery voltage is present, go to next step. If battery

voltage is not present, check and repair IOD connector A-09X, joint

connector C-132, junction block connector C-81 and junction block

connector C-93 as necessary. See Figs. 4, 16, 19, 20, 26 and 30. If

connectors are okay and malfunction remains, check harness between

cruise control ECU and power supply. Repair as necessary.

         2) Check condition of cruise control ECU connector C-50.

Repair as necessary. If connector is okay and malfunction remains,

replace cruise control ECU.

         Test No. 8

         A malfunction of switches or fail-safe function cancelling

cruise control may be present. Probable causes are:

      *  Malfunction of cruise control main switch.

      *  Malfunction of cruise control switch.

      *  Malfunction of clockspring.

      *  Malfunction of harnesses or connectors.

      *  Malfunction of park/neutral position switch.

      *  Malfunction of cruise control ECU.

         1) Attach scan tool to DLC. If scan tool can communicate with

cruise control, go to next step. If scan tool cannot communicate with

cruise control, go to TEST NO. 2.

         2) If input switch inspection is possible with scan tool, go

to next step. If input switch inspection is not possible, go to TEST

NO. 3.

         3) If input switch Code 21, 22 or 27 are still displayed,

replace cruise control main switch. If codes are no longer displayed,

go to next step.

         4) If input switch Code 23 is still displayed, go to TEST NO.

13. If input switch Code 26 is still displayed, go to TEST NO. 14. If

codes are no longer displayed, replace cruise control ECU.

         Test No. 9

         A malfunction of Vehicle Speed Sensor (VSS) or incorrect

vacuum in cruise control vacuum pump or actuator may be present.

Probable causes are:

      *  Malfunction of VSS.

      *  Malfunction of cruise control vacuum pump.

      *  Malfunction of actuator.

      *  Malfunction of cruise control ECU.

         1) Check vehicle speed sensor. See  VEHICLE SPEED SENSOR TEST

under COMPONENT TESTS. If speed sensor is okay, go to next step. If

speed sensor is defective, replace VSS.

         2) Check cruise control vacuum pump. See  VACUUM PUMP TEST

under COMPONENT TESTS. If pump is defective, replace pump. If pump is

okay, go to next step.

         3) Check actuator. See ACTUATOR TEST under COMPONENT TESTS.

If actuator is defective, replace actuator. If actuator is okay,

replace cruise control ECU.

         Test No. 10

         A blown bulb in cruise control main switch or malfunction of

cruise control main switch is probable cause of malfunction. Replace

cruise control main switch.

         Test No. 11

         A malfunction of cruise control main switch, harness or

connector may exist. Probable causes are:

      *  Malfunction of cruise control main switch.

      *  Malfunction of connector.

      *  Malfunction of harness.

         1) Check cruise control main switch. See

CRUISE CONTROL SWITCH TESTS under COMPONENT TESTS. If switch is okay,

go to next step. If switch is defective, replace cruise control main

switch.

         2) Disconnect cruise control main switch connector C-01. At

harness side of connector, measure voltage between terminal No. 2 and

ground. If battery voltage is present, go to next step. If battery

voltage is not present, check joint connector C-130 and junction block

connector C-80. Repair as necessary. See Figs. 16, 18, 26 and 28. If

connectors are okay and malfunction remains, check harness between

cruise control main switch and power supply. Repair as necessary.

         3) Check cruise control main switch connector C-01,

combination meter connector C-04, and joint connector C-130. Repair as

necessary. See Figs. 8, 9, 16 and 28. If connectors are okay and

malfunction remains, check harness between cruise control main switch

and dash lights rheostat. Repair as necessary.

         Test No. 12

         A malfunction of bulb, connector or harness may exist.

Probable causes are:

      *  Malfunction of bulb.

      *  Malfunction of connector.

      *  Malfunction of harness.

      *  Malfunction of cruise control ECU.

         1) Perform cruise control indicator test. See

CRUISE CONTROL INDICATOR TEST under COMPONENT TESTS. If cruise control

indicator is defective, replace indicator. If indicator checks okay,

go to next step.

         2) If cruise control indicator illuminates when cruise

control connector C-50 terminal No. 23 is grounded at harness side,

replace cruise control ECU. If indicator does not illuminate, check

combination meter connector C-12 and cruise control ECU connector C-

50. Repair as necessary. If connectors are okay and malfunction

remains, check harness between combination meter and cruise control

ECU. Repair as necessary.

         Test No. 13

         1) Perform stoplight switch test. See

BRAKELIGHT/STOPLIGHT SWITCH TEST under COMPONENT TESTS. If switch is

okay, go to next step. If switch is defective, replace brakelight

switch.

         2) Check cruise control ECU connector C-50, stoplight switch

connector C-55 and joint connector C-131. Repair as necessary. See

Figs. 13, 14, 16 and 29. If connectors are okay and malfunction

remains, check harness between joint connector C-131 and cruise

control ECU.

         Test No. 14 (A/T)

         1) Perform park/neutral switch test. See

PARK/NEUTRAL SWITCH TEST under COMPONENT TESTS. If switch is okay, go

to next step. If switch is defective, replace switch.

         2) Check starter relay. Replace if defective. If relay is

okay, check cruise control ECU connector C-50 and joint connector C-

130. Repair as necessary. See Figs. 13, 16 and 28. If connectors are

okay and malfunction remains, check harness between cruise control ECU

and power supply.

         COMPONENT TESTS

         ACTUATOR TEST

         Remove actuator. Apply vacuum to actuator. Actuator linkage

holder should move more than 1.38" (35 mm). Actuator diaphragm should

hold vacuum. Replace actuator if actuator does not test as specified.

         BRAKELIGHT/STOPLIGHT SWITCH TEST

         Disconnect stoplight switch connector C-55. When brake pedal

is pressed, continuity should be present between terminals No. 2 and

3. See Fig. 14. When brake pedal is released, continuity should be

present between terminals No. 1 and 4. Replace switch if it does not

test as specified.

         CLOCKSPRING TEST

WARNING: Deactivate air bag system before performing any service

         operation. See AIR BAG RESTRAINT SYSTEMS article. Do not

         apply electrical power to any component on steering column

         without first deactivating air bag system. Air bag may

         deploy.

         If clockspring fails any check, replace with a NEW

clockspring.

         1) Check connectors and protective tube for damage and

deformities.

         2) Visually check case for damage or deformities.

         3) Continuity should be present between:

      *  Connector No. 1, terminal No. 1 and connector No. 4,

         terminal No. 2.

      *  Connector No. 1, terminal No. 2 and connector No. 4,

         terminal No. 1.

      *  Connector No. 1, terminal No. 3 and connector No. 3.

         See Fig. 31.

         4) Align paint mark on SRS connector No. 4 with notch in

clockspring connector No. 2 and join connectors. See  Fig. 32. Using a

DVOM, check for continuity between terminals No. 22 and 23 at SRS Test

Harness (MB991613) connector No. 5.

Fig. 31:  Identifying Clockspring Connectors

Courtesy of Mitsubishi Motor Sales of America

 

 

 

 

 

 

 

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