Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) Diagnostic system check-engine controls".
1) Connect the scan tool.
2) Perform the Glow Relay with a scan tool.
3) Command the glow relay ON/OFF. Does the glow relay make any operation sound with the execution of each command?
Yes
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) intermittent conditions of engine".
No
=>Go to Glow relay inspection.
1) Turn OFF the ignition switch.
2) Replace the glow relay with a known good relay.
3) Perform the Glow Relay with a scan tool.
4) Command the glow relay ON/OFF. Does the glow relay make any operation sound with the execution of each command?
Yes
=>Go to Glow relay terminal inspection.
No
=>Go to Inspection for open circuit in glow relay coil side power supply circuit.
1) Turn OFF the ignition switch.
2) Remove the glow relay.
3) Connect a test lamp between the glow relay coil side power supply circuit (pin 3 of the Fuse and Relay Box (Engine Compartment) GLOW) and the body ground.
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
4) Turn ON the ignition switch. Does the test lamp illuminate?
Yes
=>Go to Inspection for open circuit and short circuit in glow relay control circuit.
No
Repair the open circuit or high resistance in the coil side power supply circuit between the ENGINE(IG1) 5A fuse and the glow relay (pin 3 of Fuse and Relay Box (Engine Compartment) GLOW). Inspect the ENGINE(IG1) 5A fuse first.
1) Inspect the control circuit between the ECM (pin 4 of C8) and the glow relay (pin 4 of Fuse and Relay Box (Engine Compartment) GLOW) for the following. Is the result normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to ECM harness connector inspection.
No
Repair the circuit as necessary.
1) Inspect for poor connections at the glow relay terminals (pins 3 and 4 of Fuse and Relay Box (Engine Compartment) GLOW). Is the connection status normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
Replace the glow relay.
No
Repair the connections as necessary.
1) Inspect for poor connections at the ECM harness connector (pin 4 of C8). Is the connection status normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
No
Repair the connections as necessary.
Note
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM installation".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM setting".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 1 minute or more.
3) Turn ON the ignition switch.
4) Perform the Glow Relay with a scan tool.
5) Command the glow relay ON/OFF. Does the glow relay make any operation sound with the execution of each command?
Yes
Observe the DTC information with a scan tool.
No