How To Proceed With Troubleshooting

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedure to troubleshoot the push-button start function.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

HINT
* In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
* Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points in the problem analysis:





NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT -- Continue to next step.

4. CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally How to Proceed With Troubleshooting.

Result:





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM Multiplex Communication System
A -- Continue to next step.

5. CHECK LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the LIN Communication System (LIN) is functioning normally How to Proceed With Troubleshooting.

Result:





B -- GO TO LIN COMMUNICATION SYSTEM LIN Communication System
A -- Continue to next step.

6. CHECK FOR DTC*

(a) Check for DTC and note any codes that are output Smart Access System With Push-Button Start (for Start Function).

(b) Clear the DTC.

(c) Recheck for DTCs.

Result:





B -- GO TO DIAGNOSTIC TROUBLE CODE CHART Smart Access System With Push-Button Start (for Start Function)
A -- Continue to next step.

7. INSPECT BASIC OPERATION

(a) for AT:

Turn the engine switch on (START) and check that the engine starts normally. Make sure the brake pedal is depressed and the shift position is in P at this time.

for MT:

Turn the engine switch on (START) and check that the engine starts normally. Make sure the clutch pedal is depressed.

(b) Check that the engine switch mode can be changed by pushing the engine switch.

HINT
for AT:

Without depressing the brake pedal, push the engine switch repeatedly. Engine switch mode should turn from off to on (ACC) to on (IG) and back to off.

With the brake pedal depressed, push the engine switch repeatedly. Engine switch mode should turn to ENGINE START from any status.

for MT:

Without depressing the clutch pedal, push the engine switch repeatedly. Engine switch mode should turn from off to on (ACC) to on (IG) and back to off.

With the clutch pedal depressed, push the engine switch repeatedly. Engine switch mode should turn to ENGINE START from any status.

OK:

Engine can start normally.

NEXT -- Continue to next step.

8. PROBLEM SYMPTOMS TABLE

Result:





B -- Go to step 10
A -- Continue to next step.

9. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU Smart Access System With Push-Button Start (for Start Function)

(b) Data List / Active Test Smart Access System With Push-Button Start (for Start Function)

NEXT -- Continue to next step.

10. REPAIR OR REPLACE

NEXT -- Continue to next step.

11. CONFIRMATION TEST

NEXT -- END