CALL CANNOT BE MADE [EMERGENCY CALL]

id0903p7071000

Outline

Description

•  Call cannot be made.

Possible cause

•  Emergency call switch malfunction

•  Air bag system malfunction

•  Finalization was not implemented

•  Emergency call contorl module malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY ALL SYSTEM DTCs

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

Go to the next step.

2

VERIFY IF FINALIZATION IS COMPLETED

•  Is the finalization completed?

Yes

Perform the finalization and perform the repair completion verification.

No

Go to the next step.

3

VERIFY OPERATION RECORD

•  Verify the operation record of the emergency call control module using the M-MDS.

•  Is there a remaining call record indicating an attempted call?

Yes

The system is normal. (Explain to the customer that there may be a communication error due to the radio wave conditions.)

No

Go to the next step.

4

VERIFY CALL METHOD WHEN MALFUNCTION OCCURRED

•  Verify with the customer the conditions when a call was made.

•  Was making a call by operating the emergency call switch attempted?

Yes

Go to the next step.

No

Go to the step6.

5

INSPECT EMERGENCY CALL SWITCH FOR MALFUNCTION

•  Inspect the applicable part.
(See EMERGENCY CALL SWITCH INSPECTION.)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EMERGENCY CALL SWITCH REMOVAL/INSTALLATION.)

6

VERIFY HOW AIR BAGS DEPLOY

•  Does the air bag deploy?

Yes

Verify if there is no malfunction related to the air bag system.

(See DTC TABLE [SAS CONTROL MODULE].)

(See TROUBLESHOOTING INDEX [AIR BAG SYSTEM].)

•  If there is no malfunction related to the air bag system, perform the repair completion verification.

No

The system is normal. (Explain to the customer that a call is not made by a small collision in which the air bags do not deploy.)

Repair completion verification

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting. (Explain contents of repair to customer)

No

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction is not resolved, replace the emergency call unit.
(See EMERGENCY CALL UNIT REMOVAL/INSTALLATION.)

Description	• Call cannot be made.
Possible cause	• Emergency call switch malfunction • Air bag system malfunction • Finalization was not implemented • Emergency call contorl module malfunction

Step	Inspection	Results	Action
1	VERIFY ALL SYSTEM DTCs • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	VERIFY IF FINALIZATION IS COMPLETED • Is the finalization completed?	Yes	Perform the finalization and perform the repair completion verification.
2		No	Go to the next step.
3	VERIFY OPERATION RECORD • Verify the operation record of the emergency call control module using the M-MDS. • Is there a remaining call record indicating an attempted call?	Yes	The system is normal. (Explain to the customer that there may be a communication error due to the radio wave conditions.)
3		No	Go to the next step.
4	VERIFY CALL METHOD WHEN MALFUNCTION OCCURRED • Verify with the customer the conditions when a call was made. • Was making a call by operating the emergency call switch attempted?	Yes	Go to the next step.
4		No	Go to the step6.
5	INSPECT EMERGENCY CALL SWITCH FOR MALFUNCTION • Inspect the applicable part. (See EMERGENCY CALL SWITCH INSPECTION.) • Is the part normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EMERGENCY CALL SWITCH REMOVAL/INSTALLATION.)
6	VERIFY HOW AIR BAGS DEPLOY • Does the air bag deploy?	Yes	Verify if there is no malfunction related to the air bag system. (See DTC TABLE [SAS CONTROL MODULE].) (See TROUBLESHOOTING INDEX [AIR BAG SYSTEM].) • If there is no malfunction related to the air bag system, perform the repair completion verification.
6	VERIFY HOW AIR BAGS DEPLOY • Does the air bag deploy?	No	The system is normal. (Explain to the customer that a call is not made by a small collision in which the air bags do not deploy.)
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction is not resolved, replace the emergency call unit. (See EMERGENCY CALL UNIT REMOVAL/INSTALLATION.)