DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to terminal IG of the TCM. Power is supplied to the TCM via terminals +B and IG.The TCM interprets the ignition switch condition through the potential at the IG terminal.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
READ VALUE USING GTS (IGNITION SIGNAL)
Connect the GTS to the DLC3
Turn the ignition switch to ON.
Turn the GTS on
Enter the following menu: Powertrain / Multi-Mode M/T / Data List.
In accordance with the display on the GTS, read the Data List.
Powertrain > Multi-Mode M/T > Data ListTester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Ignition Signal | Ignition switch signal | OFF or ON | ON: ignition switch to ON | - |
OK |
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[ON] is displayed in the item [Ignition Signal] when the ignition switch is turned to ON. |
Tester Display |
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Ignition Signal |
Result | |||
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|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here Нажмите здесь |
NG |
INSPECT TCM (IG TERMINAL VOLTAGE)
Disconnect the TCM connector.
*a |
Front view of wire harness connector (to TCM) |
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||||
---|---|---|---|---|---|---|---|---|
|
Result | ||||||
---|---|---|---|---|---|---|
|
B | Нажмите здесь |
A |
CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND)
Remove the IG2 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 (IG2 RELAY - IGNITION SWITCH OR CERTIFICATION ECU)
Remove the IG2 relay from the engine room relay block and junction block assembly.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||||
---|---|---|---|---|---|---|---|---|
|
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
B | Нажмите здесь |
C | Нажмите здесь |
A |
CHECK HARNESS AND CONNECTOR (IG2 RELAY - BATTERY)
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT RELAY (IG2 RELAY)
Inspect the IG2 relay.
Click hereНажмите здесь
Result | |||
---|---|---|---|
|
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - TCM) |
NG |
REPLACE RELAY (IG2 RELAY) |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - IG2 RELAY)
Disconnect the certification ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
GO TO ENTRY AND START SYSTEM |
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 - IG2 RELAY)
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 |
CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)
Disconnect the TCM connector.
*a |
Front view of wire harness connector (to TCM) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE TCM
Replace the TCM.
for LHD: Click here Нажмите здесь
for RHD: Click here Нажмите здесь
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION
Perform the initialization and learning procedure.
Click hereНажмите здесь
Result | ||
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|
NEXT |
END |