Juke F15 (2012 year). Service Repair Manual — part 175

ASCD MAIN SWITCH

EC-1009

< DTC/CIRCUIT DIAGNOSIS >

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ASCD MAIN SWITCH

Component Function Check

INFOID:0000000006496731

1.

CHECK ASCD MAIN SWITCH FUNCTION

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1009, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496732

1.

CHECK ASCD MAIN SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between combination switch (spiral cable) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Combination switch (spiral cable)
• 10 A fuse (No. 2)
• Harness for open and short between combination switch (spiral cable) and ground.

>> Repair open circuit, short to ground or short to power in harness or connectors.

3.

CHECK ASCD MAIN SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and combination switch (spiral cable) harness con-
nector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

ECM

Condition

Voltage (V)

Connector

+

-

Terminal

Terminal

E32

130

(ASCD main

switch signal)

160

ASCD MAIN switch

Pressed

Battery voltage

Released

Approx. 0

Combination switch (spiral cable)

Ground

Voltage

Connector

Terminal

M303

35

Ground

Battery voltage

ECM

Combination switch (spiral cable)

Continuity

Connector

Terminal

Connector

Terminal

E32

142

M302

13

Existed

EC-1010

< DTC/CIRCUIT DIAGNOSIS >

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ASCD MAIN SWITCH

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E105, M77
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch (spiral cable)

>> Repair open circuit, short to ground or short to power in harness or connectors.

5.

CHECK ASCD STEERING SWITCH

Refer to

EC-1010, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace ASCD steering switch.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “INCIDENT SIMULATION TESTS” and “GROUND INSPECTION”.

>> INSPECTION END

Component Inspection

INFOID:0000000006496733

1.

CHECK ASCD STEERING SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Check the continuity between combination switch (spiral cable) harness connector terminals under the fol-
lowing condition.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace ASCD steering switch.

2.

CHECK ASCD STEERING SWITCH-II

Check resistance between combination switch (spiral cable) harness connector terminals under the following
conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch.

Combination switch (spiral cable)

Condition

Continuity

Connector

Terminals

Connector

Terminal

M303

35

M303

36

Speed limiter MAIN switch

Pressed

Existed

Released

Not existed

37

ASCD MAIN switch

Pressed

Existed

Released

Not existed

Combination switch (spiral cable)

Condition

Resistance (

Ω

)

Connector

Terminals

M302

13 and 16

CANCEL switch: Pressed

Approx. 0

SET/COAST switch: Pressed

Approx. 100

SET/ACCELERATE switch: Pressed

Approx. 274

RESUME switch: Pressed

Approx. 910

ASCD STEERING SWITCH

EC-1011

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ASCD STEERING SWITCH

Component Function Check

INFOID:0000000006496734

1.

CHECK ASCD STEERING SWITCH FUNCTION

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1011, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496735

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground inspection in

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD STEERING SWITCH CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Disconnect ECM harness connector.

4.

Check the continuity between combination switch (spiral cable) harness connector and ECM harness con-
nector.

5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

• Harness connector E105, M77
• Combination switch (spiral cable)
• Harness for open or short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

ECM

Condition

Voltage

Connector

+

-

Terminal

Terminal

E32

142

(ASCD steering switch signal)

143

CANCEL switch: Pressed

Approx. 0V

SET/COAST switch: Pressed

Approx. 0.5V

SET/ACCELERATE switch: Pressed

Approx. 1.1V

RESUME switch: Pressed

Approx. 2.2V

All ASCD steering switches: Released

Approx. 5V

Combination switch (spiral cable)

ECM

Continuity

Connector

Terminal

Connector

Terminal

M302

13

E32

142

Existed

EC-1012

< DTC/CIRCUIT DIAGNOSIS >

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ASCD STEERING SWITCH

1.

Check the continuity between combination switch (spiral cable) harness connector and ECM harness con-
nector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

• Harness connector E105, M77
• Combination switch (spiral cable)
• Harness for open or short between ECM and combination switch (spiral cable)

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK ASCD STEERING SWITCH

Refer to

EC-1012, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace ASCD steering switch.

7.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “GROUND INSPECTION” and “INCIDENT SIMULATION TESTS”.

>> INSPECTION END

Component Inspection

INFOID:0000000006496736

1.

CHECK ASCD STEERING SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Check the continuity between combination switch (spiral cable) harness connector terminals under the fol-
lowing condition.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace ASCD steering switch.

2.

CHECK ASCD STEERING SWITCH-II

Check resistance between combination switch (spiral cable) harness connector terminals under the following
conditions.

Combination switch (spiral cable)

ECM

Continuity

Connector

Terminal

Connector

Terminal

M302

16

E32

143

Existed

Combination switch (spiral cable)

Condition

Continuity

Connector

Terminals

Connector

Terminal

M303

35

M303

36

Speed limiter MAIN switch

Pressed

Existed

Released

Not existed

37

ASCD MAIN switch

Pressed

Existed

Released

Not existed

ASCD STEERING SWITCH

EC-1013

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch.

Combination switch (spiral cable)

Condition

Resistance (

Ω

)

Connector

Terminals

M302

13 and 16

CANCEL switch: Pressed

Approx. 0

SET/COAST switch: Pressed

Approx. 100

SET/ACCELERATE switch: Pressed

Approx. 274

RESUME switch: Pressed

Approx. 910

EC-1014

< DTC/CIRCUIT DIAGNOSIS >

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CAN COMMUNICATION CIRCUIT

CAN COMMUNICATION CIRCUIT

Description

INFOID:0000000006496737

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

Component Function Check

INFOID:0000000006496738

1.

CHECK CAN COMMUNICATION CIRCUIT

1.

Turn ignition switch ON.

2.

Check DTC.

Is DTC detected?

YES

>>

EC-1014, "Diagnosis Procedure"

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000006496739

Go to

LAN-17, "Trouble Diagnosis Flow Chart"

.

COOLING FAN

EC-1015

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COOLING FAN

Diagnosis Procedure

INFOID:0000000006496740

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK COOLING FAN MOTOR CIRCUIT

1.

Disconnect cooling fan motor harness connector.

2.

Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector.

3.

Check the continuity between cooling fan motor harness connector and ground.

4.

Also check harness for short to ground and short to power.

YES or NO

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between cooling fan motor and IPDM E/R
• Harness for open or short between cooling fan motor and ground

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK COOLING FAN MOTOR

Refer to

EC-1015, "Component Inspection"

.

YES or NO

YES

>> GO TO 5.

NO

>> Replace cooling fan motor.

5.

CHECK INTERMITTENT INCIDENT

Perform

GI-42, "Intermittent Incident"

.

YES or NO

YES

>> Replace IPDM E/R. Refer to

PCS-34, "Exploded View"

(WITH I-KEY) or

PCS-63, "Exploded

View"

(WITHOUT I-KEY).

NO

>> Repair or replace harness or connector.

Component Inspection

INFOID:0000000006496741

1.

CHECK COOLING FAN MOTOR

IPDM E/R

Cooling fan motor

Continuity

Connector

Terminal

Connector

Terminal

E10

5

E75

1

Existed

7

E76

3

E11

10

4

Cooling fan motor

Ground

Continuity

Connector

Terminal

E75

2

Ground

Existed

EC-1016

< DTC/CIRCUIT DIAGNOSIS >

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COOLING FAN

1.

Turn ignition switch OFF.

2.

Disconnect cooling fan motor harness connector E75 and E76.

3.

Supply cooling fan motor terminals with battery voltage and check operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace cooling fan motor.

Speed

terminals

(+)

(

−

)

Cooling fan mo-
tor

Low

1

2

3

4

High

1 and 3

2 and 4

INFORMATION DISPLAY (ASCD)

EC-1017

< DTC/CIRCUIT DIAGNOSIS >

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INFORMATION DISPLAY (ASCD)

Component Function Check

INFOID:0000000006496742

1.

CHECK INFORMATION DISPLAY

1.

Start engine.

2.

Press ASCD MAIN switch.

3.

Drive the vehicle at more than 30 km/h (20 MPH)

CAUTION:

Always drive vehicle at a safe speed.

4.

Press SET/ACCELERATE or SET/COAST switch.

5.

Check that the readings of the speedometer show the same values as the set speed indicated in the infor-
mation display while driving the vehicle on a flat road.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1017, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496743

1.

CHECK CAN COMMUNICATION LINE

Refer to

LAN-31, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace.

2.

CHECK DTC WITH “UNIFIED METER AND A/C AMP.”

Refer to

MWI-23, "CONSULT-III Function"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble diagnosis relevant to DTC indicated.

3.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “INCIDENT SIMULATION TESTS” and “GROUND INSPECTION”.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Repair or replace.

EC-1018

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

INFORMATION DISPLAY (SPEED LIMITER)

INFORMATION DISPLAY (SPEED LIMITER)

Component Function Check

INFOID:0000000006496744

1.

CHECK INFORMATION DISPLAY (SPEED LIMITER) FUNCTION

1.

Start engine.

2.

Press speed limiter MAIN switch.

3.

Drive the vehicle at more than 30 km/h (20 MPH).

CAUTION:

Always drive vehicle at a safe speed.

4.

Press SET/ACCELERATE or SET/COAST switch.

5.

Perform a test drive on a flat road conditions. Check that the speedometer indicated the same value as
the set speed indicator on the information display while depressing the accelerator pedal until just before
a kickdown occurs.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1018, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496745

1.

CHECK CAN COMMUNICATION LINE

Refer to

LAN-31, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace.

2.

CHECK DTC WITH “UNIFIED METER AND A/C AMP.”

Refer to

MWI-23, "CONSULT-III Function"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble diagnosis relevant to DTC indicated.

3.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “INCIDENT SIMULATION TESTS” and “GROUND INSPECTION”.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Repair or replace.

MALFUNCTION INDICATOR

EC-1019

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MALFUNCTION INDICATOR

Component Function Check

INFOID:0000000006496746

1.

CHECK MI FUNCTION

1.

Turn ignition switch ON.

2.

Make sure that MI lights up.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1019, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496747

1.

CHECK CAN COMMUNICATION LINE

Refer to

LAN-17, "Trouble Diagnosis Flow Chart"

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace.

2.

CHECK COMBINATION METER

Refer to

MWI-23, "CONSULT-III Function"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace.

3.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “GROUND INSPECTION” and “INCIDENT SIMULATION TESTS”.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Repair or replace.

EC-1020

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

SPEED LIMITER MAIN SWITCH

SPEED LIMITER MAIN SWITCH

Component Function Check

INFOID:0000000006496748

1.

CHECK SPEED LIMITER MAIN SWITCH FUNCTION

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-1020, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006496749

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK SPEED LIMITER MAIN SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between combination switch (spiral cable) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Combination switch (spiral cable)
• 10 A fuse (No. 2)
• Harness for open and short between combination switch (spiral cable) and ground.

>> Repair open circuit, short to ground or short to power in harness or connectors.

4.

CHECK SPEED LIMITER MAIN SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and combination switch (spiral cable) harness con-
nector.

ECM

Ground

Condition

Voltage (V)

Connector

Terminal

E32

139

Ground

Speed limiter MAIN switch

Pressed

Battery voltage

Released

Approx. 0

Combination switch (spiral cable)

Ground

Voltage

Connector

Terminal

M303

35

Ground

Battery voltage

SPEED LIMITER MAIN SWITCH

EC-1021

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4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E105, M77
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch (spiral cable)

>> Repair open circuit, short to ground or short to power in harness or connectors.

6.

CHECK ASCD STEERING SWITCH

Refer to

EC-1021, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace ASCD steering switch.

7.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

, “INCIDENT SIMULATION TESTS” and “GROUND INSPECTION”.

>> INSPECTION END

Component Inspection

INFOID:0000000006496750

1.

CHECK ASCD STEERING SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Check the continuity between combination switch (spiral cable) harness connector terminals under the fol-
lowing condition.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace ASCD steering switch.

2.

CHECK ASCD STEERING SWITCH-II

Check resistance between combination switch (spiral cable) harness connector terminals under the following
conditions.

ECM

Combination switch (spiral cable)

Continuity

Connector

Terminal

Connector

Terminal

E32

139

M303

36

Existed

Combination switch (spiral cable)

Condition

Continuity

Connector

Terminals

Connector

Terminal

M303

35

M303

36

Speed limiter MAIN switch

Pressed

Existed

Released

Not existed

37

ASCD MAIN switch

Pressed

Existed

Released

Not existed

EC-1022

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

SPEED LIMITER MAIN SWITCH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch.

Combination switch (spiral cable)

Condition

Resistance (

Ω

)

Connector

Terminals

M302

13 and 16

CANCEL switch: Pressed

Approx. 0

SET/COAST switch: Pressed

Approx. 100

SET/ACCELERATE switch: Pressed

Approx. 274

RESUME switch: Pressed

Approx. 910

ENGINE CONTROL SYSTEM SYMPTOMS

EC-1023

< SYMPTOM DIAGNOSIS >

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SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000006496751

NOTE:
Only consult this customer complaint after a complete check using the CONSULT-III.

Symptom

Trouble diagnosis

Reference page

No communication with the ECM

CHART 1

EC-1024, "Diag-

nosis Procedure"

Starting malfunction

Engine does not start or starts with difficulty

CHART 2

EC-1025, "Diag-

nosis Procedure"

Starting difficult with cold engine

CHART 3

EC-1027, "Diag-

nosis Procedure"

Impossible to shut off engine

CHART 4

EC-1029, "Diag-

nosis Procedure"

Idle speed malfunction

Engine Idle speed too high

CHART 5

EC-1030, "Diag-

nosis Procedure"

Engine Idle speed too low or unstable

CHART 6

EC-1031, "Diag-

nosis Procedure"

Behavior while driving

Engine stalling

CHART 7

EC-1033, "Diag-

nosis Procedure"

No or very little acceleration, increase in engine speed

CHART 8

EC-1035, "Diag-

nosis Procedure"

Engine bucking

CHART 9

EC-1038, "Diag-

nosis Procedure"

Erratic acceleration

CHART 10

EC-1040, "Diag-

nosis Procedure"

No engine braking

CHART 11

EC-1042, "Diag-

nosis Procedure"

Loss of power

CHART 12

EC-1043, "Diag-

nosis Procedure"

Too much power

CHART 13

EC-1046, "Diag-

nosis Procedure"

Overspeed at idle speed or on releasing brake

CHART 14

EC-1048, "Diag-

nosis Procedure"

Excessive consumption

CHART 15

EC-1049, "Diag-

nosis Procedure"

Engine knock

CHART 16

EC-1051, "Diag-

nosis Procedure"

Engine overheating

CHART 17

EC-1053, "Diag-

nosis Procedure"

Noise, odors or smoke

Engine smokes when started

CHART 18

EC-1054, "Diag-

nosis Procedure"

Engine emits blue smoke

CHART 19

EC-1055, "Diag-

nosis Procedure"

Engine smokes when revved

CHART 20

EC-1057, "Diag-

nosis Procedure"

Engine emits white smoke (especially when starting)

CHART 21

EC-1058, "Diag-

nosis Procedure"

Emission control not satisfactory

CHART 22

EC-1059, "Diag-

nosis Procedure"

EC-1024

< SYMPTOM DIAGNOSIS >

[K9K]

NOT COMMUNICATION WITH THE ECM

NOT COMMUNICATION WITH THE ECM

Description

INFOID:0000000006496752

CHART 1: NO COMMUNICATION WITH THE ECM

Diagnosis Procedure

INFOID:0000000006496753

1.

INSPECTION START

Ensure that CONSULT-III is not causing the malfunction by trying to establish dialogue with an ECM on
another vehicle. If the CONSULT-III is not at malfunction, and dialogue cannot be established with any other
ECM on the same vehicle, the cause could be a suspected ECM interfering on the CAN communication line.
Check the voltage of the battery and carry out the operations necessary to obtain a voltage which is to specifi-
cation (9.5 V < U battery < 17.5 V).

>> GO TO 2.

2.

CHECK CAN COMMUNICATION

Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to

LAN-31, "CAN COM-

MUNICATION SYSTEM : CAN Communication Signal Chart"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK ECM GROUND

Check the ECM earth (ground).

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace ground connection.

4.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connector.

5.

CHECK DATA LINK CONNECTOR CIRCUIT

Check for the presence of 12 V on terminal 16 with ignition switch OFF, 12 V on terminal 8 with ignition switch
ON and an earth (ground) on terminals 4 and 5 of the data link connector.
Repair if necessary.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace harness or connector.