Note
Refer to "53.Driveline Control 3A.Troubleshooting(4WD models) diagnostic system check-transfer case controls".
1) Connect the scan tool.
2) Turn OFF the ignition switch for 30 seconds or more.
3) Start the engine.
4) Observe the DTC information with a scan tool. Is a DTC set?
Yes
=>Go to Charging system inspection.
No
Go to Intermittent conditions of transfer case control system.
Refer to "204.Driveline, Axle 17D.Symptom intermittent conditions of transfer case control system".
1) Inspect the charging system. Is the result normal?
Refer to "1.Engine 1J.Electrical(RZ4E-TC) generator inspection".
Refer to "202.Engine 15D.Symptom(RZ4E-TC) defect of charging system".
Refer to "1.Engine 1J.Electrical(4JJ3 without DPD) generator inspection".
Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) defect of charging system".
Refer to "1.Engine 1J.Electrical(4JJ3 with DPD) generator inspection".
Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) defect of charging system".
Yes
=>Go to Inspection for high resistance in TCCM ground circuit.
No
Repair the charging system.
Refer to "1.Engine 1J.Electrical(RZ4E-TC) generator removal".
Refer to "1.Engine 1J.Electrical(RZ4E-TC) generator installation".
Refer to "1.Engine 1J.Electrical(4JJ3 without DPD) generator removal".
Refer to "1.Engine 1J.Electrical(4JJ3 without DPD) generator installation".
Refer to "1.Engine 1J.Electrical(4JJ3 with DPD) generator removal".
Refer to "1.Engine 1J.Electrical(4JJ3 with DPD) generator installation".
1) Disconnect the TCCM harness connector (C15).
2) Inspect the ground circuit between the TCCM (pins 14 and 15 of C15) and the TCCM ground for high resistance. Is the result normal?
Refer to "LHD 4WD" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD 4WD" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to TCCM ground inspection.
No
Repair the circuit as necessary.
1) Inspect the TCCM ground section for corrosion or improper installation. Is the result normal?
Yes
=>Go to TCCM harness connector inspection.
No
Repair the TCCM ground point as necessary.
1) Inspect for poor connections at the TCCM harness connector (pins 2, 14, and 15 of C15). Is the connection status normal?
Refer to "LHD 4WD" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD 4WD" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
Go to Intermittent conditions of transfer case control system.
Refer to "204.Driveline, Axle 17D.Symptom intermittent conditions of transfer case control system".
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) Apply an electric load by turning ON the headlights, air conditioner, etc.
5) Observe the Battery Voltage parameter on the scan tool. Is the Battery Voltage parameter less than or equal to the specified value?
Standard: 9.0 V
Yes
=>Go to Charging system inspection.
No
Observe the DTC information with a scan tool.