DESCRIPTION
If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.
Problem Symptom | Data List and Active Test |
---|---|
Power source mode does not change to on (IG) but does change to on (ACC) |
Power Source Control |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
When using the GTS with the power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.
If the entry and start system (for Start Function) has been canceled, enable the system before performing troubleshooting.
Inspect the fuses of circuits related to this system before performing the following procedure.
Before replacing the certification ECU (smart key ECU assembly), refer to entry and start system (for Start Function) Precaution.
After completing repairs, confirm that the problem does not recur.
Tech Tips
When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
CHECK FOR DTC
Using the GTS, check for certification ECU (smart key ECU assembly) DTCs.
Result | ||||||
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|
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here |
A |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
Disconnect the I1 certification ECU (smart key ECU assembly) connector.
Disconnect the 3A and 3D instrument panel junction block assembly connectors.
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 HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - NO. 1 INTEGRATION RELAY)
Disconnect the 1A No. 1 integration relay connector.
Disconnect the 3F instrument panel junction block assembly 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 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1-NO. 1, IG1-NO. 2 RELAY)
Remove the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
*a | Component without harness connected (Instrument Panel Junction Block Assembly) |
- | - |
Standard Resistance | ||||||||||||||||
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|
Result | |||
---|---|---|---|
|
NG |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here |
OK |
INSPECT NO. 1 INTEGRATION RELAY (IG2 NO. 1, IG1 NO. 3 RELAY)
Remove the No. 1 integration relay.
Inspect the No. 1 integration relay.
Result | |||
---|---|---|---|
|
NG |
REPLACE NO. 1 INTEGRATION RELAY (IG2 NO. 1, IG1 NO. 3 RELAY) Click here |
OK |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
Reconnect the I1 certification ECU (smart key ECU assembly) connector.
Install the instrument panel junction block assembly.
Install the No. 1 integration relay.
*a | Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
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|
Result | |||
---|---|---|---|
|
OK |
USE SIMULATION METHOD TO CHECK Click here |
NG |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |