1) Connect the scan tool. Does the scan tool power up?
Yes
=>Go to Scan tool communication verification.
No
Go to Scan tool does not power up.
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) Scan tool does not power up".
1) Connect the scan tool.
2) Turn ON the ignition switch.
3) Check the communication status with the battery sensor using the scan tool. Can communication with the battery sensor be established?
Yes
Go to Intermittent conditions of IBS.
Refer to "202.Engine 15D.Symptom(IBS (RZ4E-TC)) intermittent conditions of IBS".
No
=>Go to Central gateway control unit communication verification.
1) Verify communication with the central gateway control unit using the scan tool. Can communication with the central gateway control unit be established?
Yes
=>Go to Powertrain CAN communication circuit communication verification.
No
Go to Lost communication with the central gateway control unit.
1) Verify that communication can be established with the following control modules using a scan tool. Can communication with all the control modules be established?
Yes
=>Go to Battery sensor harness connector inspection.
No
Go to Lost communication with the central gateway control unit. Go to Powertrain CAN communication circuit inspection.
Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) powertrain CAN communication circuit inspection".
1) Turn OFF the ignition switch.
2) Inspect for poor connections at the battery sensor harness connector (C49). Is the connection status normal?
Refer to "LHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
No
Repair the connections as necessary.
1) Inspect the following fuses for a blowout. Is the result normal?
Yes
=>Go to Inspection for open circuit in battery power supply circuit.
No
Replace the fuse as necessary. If the fuse blows out again, repair the short to ground in the circuit relating to each fuse.
1) Turn OFF the ignition switch.
2) Disconnect the battery sensor harness connector (C49).
3) Connect a test lamp between the battery power supply circuit (pin 5 of C49) and the body ground. Does the test lamp illuminate?
Refer to "LHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Inspection for open circuit in ignition power supply circuit.
No
Repair the open circuit or high resistance in the battery power supply circuit between the IBS 5A fuse and the battery sensor (pin 5 of C49).
1) Connect a test lamp between the ignition power supply circuit (pin 1 of C49) and the body ground.
Refer to "LHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Battery Sensor" in the ETM (wiring diagram). (Open using the ETM viewer.).
2) Turn ON the ignition switch. Does the test lamp illuminate?
Yes
=>Go to Battery sensor installation status inspection.
No
Repair the open circuit or high resistance in the ignition power supply circuit between the ELEC (IG1) 10A fuse and the battery sensor (pin 1 of C49).
1) Inspect the terminal installation section of the battery sensor for looseness or corrosion. Is the result normal?
Yes
=>Go to Inspection for open circuit and short circuit in CAN circuit.
No
Tighten or clean the terminal installation section of the battery sensor as necessary.
1) Inspect for poor connections at the CAN circuit junction connector between the battery sensor (pins 2 and 3 of C49) and the DLC (pins 6 and 14 of C19). Is the connection status normal?
2) Inspect the CAN High circuit and CAN Low circuit between the battery sensor (pins 2 and 3 of C49) and the DLC (pins 6 and 14 of C19) for the following. Is the result normal?
Refer to "LHD Controller Area Network (Central Gateway C/U)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 without DPD, RZ4E))" in the ETM (wiring diagram). (Open using the ETM viewer.).
3) Are all of the results normal?
Yes
=>Go to Battery sensor replacement.
No
Repair the circuit or connection as necessary.
Refer to "1.Engine 1J.Electrical(RZ4E-TC) battery sensor removal".
Refer to "1.Engine 1J.Electrical(RZ4E-TC) battery sensor installation".
Procedure completion
1) Turn OFF the ignition switch.
2) Reconnect the disconnected harness connectors.
3) Turn ON the ignition switch.
4) Check the communication status with the battery sensor using the scan tool. Can communication with the battery sensor be established?
Yes
The system is normal.
No
=>Go to Central gateway control unit communication verification.