Note
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) Diagnostic system check-engine controls".
1) Check if the battery charger has been recently connected to the battery. Is the battery charger connected to the battery?
Yes
No
=>Go to Ignition voltage check.
1) Connect the scan tool.
2) Start the engine.
3) Observe the Ignition Voltage parameter on the scan tool. Is the Ignition Voltage parameter less than or equal to the specified value?
Value: 16.0 V
Yes
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(RZ4E-TC) intermittent conditions of engine".
No
=>Go to Charging system inspection.
1) Inspect the charging system. Is the result normal?
Refer to "202.Engine 15C.Functional Inspection(RZ4E-TC) charging system check".
Yes
=>Go to ECM ground inspection.
No
Repair the charging system.
1) Inspect the ECM ground section for corrosion or improper installation. Is the result normal?
Yes
=>Go to ECM harness connector inspection.
No
Repair the ground point as necessary.
1) Inspect for poor connections at the ECM harness connector (pin 24 of C7). Is the connection status normal?
Refer to "RHD Engine Control (RZ4E)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Engine Control (RZ4E)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
No
Repair the connections as necessary.
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 30 seconds or more.
3) Start the engine.
4) Observe the Ignition Voltage parameter on the scan tool. Is the Ignition Voltage parameter less than or equal to the specified value?
Value: 16.0 V
Yes
Observe the DTC information with a scan tool.
No