DESCRIPTION
While the engine is being cranked, current flows from terminal ST2 of the ignition or starter switch assembly*1 or terminal STAR of the certification ECU (smart key ECU assembly)*2 to the clutch start switch assembly and to terminal STA of the ECM (STA signal).
*1: w/o entry and start system
*2: w/ entry and start system
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following procedure.
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click hereНажмите здесь).
PROCEDURE
CHECK WHETHER ENGINE CAN BE CRANKED
Check if the engine can be cranked.
Result | ||||||
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|
B | Нажмите здесь |
A |
READ VALUE USING GTS (STARTER SIGNAL)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
Powertrain > Engine and ECT > Data ListTester Display |
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Starter Signal |
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
OK | ||||||
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Result | |||
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|
NG | Нажмите здесь |
OK |
INSPECT ST NO. 1 RELAY
Inspect the ST NO. 1 relay.
Click hereНажмите здесь
Result | |||
---|---|---|---|
|
NG |
REPLACE ST NO. 1 RELAY |
OK |
INSPECT STARTER ASSEMBLY
Inspect the starter assembly.
Click hereНажмите здесь
Result | |||
---|---|---|---|
|
NG |
REPLACE STARTER ASSEMBLY Click hereНажмите здесь |
OK |
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - STARTER ASSEMBLY)
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
Disconnect the starter assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
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Result | |||
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NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF STARTER ASSEMBLY)
Disconnect the starter assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
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|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 1 RELAY)
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
*1 | Engine Room Relay Block and Junction Block Assembly |
*2 | ST NO. 1 Relay |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
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|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - ST NO. 1 RELAY) |
OK |
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - BODY GROUND)
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY)
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
Disconnect the clutch start switch assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click hereНажмите здесь |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
INSPECT CLUTCH START SWITCH ASSEMBLY
Inspect the clutch start switch assembly.
Click hereНажмите здесь
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
B | Нажмите здесь |
C |
REPLACE CLUTCH START SWITCH ASSEMBLY Click here Нажмите здесь |
A |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY - ENGINE STOP AND START ECU)
Disconnect the certification ECU (smart key ECU assembly) connector.
Disconnect the clutch start switch assembly connector.
Disconnect the engine stop and start ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU - ENGINE STOP AND START ECU)
Disconnect the clutch start switch assembly connector.
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
Disconnect the ECM connector.
Disconnect the certification ECU (smart key ECU assembly) connector.
Disconnect the engine stop and start ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
GO TO ENTRY AND START SYSTEM Click hereНажмите здесь |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
INSPECT IGNITION OR STARTER SWITCH ASSEMBLY
Inspect the ignition or starter switch assembly.
Click hereНажмите здесь
Result | |||
---|---|---|---|
|
NG |
REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click hereНажмите здесь |
OK |
CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ENGINE STOP AND START ECU)
Disconnect the ignition or starter switch assembly connector.
Disconnect the clutch start switch assembly connector.
Disconnect the engine stop and start ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - ENGINE STOP AND START ECU)
Disconnect the clutch start switch assembly connector.
Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.
Disconnect the ECM connector.
Disconnect the engine stop and start ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION OR STARTER SWITCH ASSEMBLY) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ VALUE USING GTS (STARTER SIGNAL)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
Powertrain > Engine and ECT > Data ListTester Display |
---|
Starter Signal |
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
OK | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click hereНажмите здесь |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (ST NO. 1 RELAY - ECM) |