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- Battery check (Refer to GROUP 54A - Battery - On-vehicle Service - Battery
Test).
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Q.
Is the check result normal?
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- Engine control relay connector check.
- Engine control relay continuity check (Refer to
).
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Q.
Is the check result normal?
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Repair or replace the connector, or replace the engine control relay.
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- Remove relay, and measure at relay box side.
- Voltage between terminal power supply lines and body earth
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector, or check
and repair harness between battery and engine control relay connector terminal.
- Check power supply line for open/short circuit.
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|
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- Disconnect connector, and measure at harness side.
- Voltage between terminal C/R and body earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector, or check
and repair harness between engine control relay connector terminal and engine-ECU connector
terminal C/R.
- Check signal line for open/short circuit.
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|
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- Disconnect connector, and measure at harness side.
- Short-circuit engine-ECU connector terminal C/R to the body earth.
- Voltage between terminal BAT1, BAT2 and body earth.
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|
Q.
Is the check result normal?
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- Check output line for open/short circuit.
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Q.
Is the check result normal?
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|
Repair or replace the connector, or repair the damaged harness wire.
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|
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- Check power supply line for damage.
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|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn001.png)
Repair or replace the connector, or check
and repair harness between engine control relay connector terminal and engine-ECU connector
terminal C/R.
- Check signal line for damage.
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|
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Repair or replace the connector, or repair the damaged harness wire.
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|
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- Check output line for damage.
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Q.
Is the check result normal?
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|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check power supply line for damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
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|
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal IGN and body earth.
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Q.
Is the check result normal?
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YES : Go to Step 15 <Vehicles without KOS>.
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YES : Go to Step 16 <Vehicles with KOS>.
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal IG1 and body earth.
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Q.
Is the check result normal?
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NO : Go to Step 12 <Vehicles without KOS>.
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NO : Go to Step 13 <Vehicles with KOS>.
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- Ignition switch connector check.
- Check ignition switch itself (Refer to GROUP 54A - Ignition Switch - Ignition
Switch - Ignition Switch Check).
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|
Q.
Is the check result normal?
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|
![](../../../buttons/03btn001.png)
Repair or replace the connector, or check
and repair harness between ignition switch connector terminal and ETACS-ECU connector terminal
IG1.
- Check signal line for open/short circuit.
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|
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Repair or replace the connector, or replace the ignition switch.
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- Check power supply line for open/short circuit.
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Q.
Is the check result normal?
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Perform troubleshooting of OSS System (Refer to GROUP 42B - Troubleshooting - Trouble
Symptom Chart ).
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Repair or replace the connector, or repair the damaged harness wire.
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- Disconnect connectors, and measure at the ETACS-ECU side.
- Continuity test between terminal IG1 and IGN.
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Q.
Is the check result normal?
|
|
![](../../../buttons/03btn001.png)
Repair or replace the connector, or check
and repair harness between ETACS-ECU connector terminal IGN and engine-ECU connector terminal
IGN.
- Check signal line for open/short circuit.
|
|
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Repair or replace the connector, or replace the ETACS-ECU.
|
|
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- Check signal line for damage.
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Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check signal line for damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Disconnect connectors, and measure at the ETACS-ECU side.
- Continuity test between terminal IG1 and IGN.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or replace the ETACS-ECU.
|
|
|
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- Check signal line for damage.
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Q.
Is the check result normal?
|
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Repair or replace the connector, or repair the damaged harness wire.
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|
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- Check earthing line for open circuit and damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
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