Diagnosis Procedure
1.CHECK FUSE
Check that the following fuse is not fusing.

Is the fuse fusing? YES >> Replace the fuse after repairing the applicable circuit.
NO >> GO TO 2.
2.CHECK GROUND CONNECTION
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace ground connection.
3.CHECK ECM GROUND CIRCUIT

Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK ECM POWER SUPPLY (MAIN)-1

Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 6.
5.CHECK ECM POWER SUPPLY (MAIN)--2

Is the inspection result normal? YES >> GO TO 9.
NO >> GO TO 7.
6.CHECK ECM POWER SUPPLY (MAIN) CIRCUIT

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
7.CHECK ECM RELAY CONTROL SIGNAL
Check the voltage between ECM harness connector terminals as per the following.

Is the inspection result normal? YES >> Check Intermittent Incident. Refer to GI-41, "Intermittent Incident".
NO >> GO TO 8.
8.CHECK ECM RELAY CONTROL SIGNAL CIRCUIT

Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-35, "Removal and Installation".
NO >> Repair or replace error-detected parts.
9.CHECK IGNITION SWITCH SIGNAL

Is the inspection result normal? YES >> GO TO 11.
NO >> GO TO 10.
10.CHECK IGNITION SWITCH SIGNAL CIRCUIT

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
11.CHECK ECM POWER SUPPLY (BACK-UP)
Check the voltage between ECM harness connector terminals.

Is the inspection result normal? YES >> Check Intermittent Incident. Refer to GI-41, "Intermittent Incident".
NO >> GO TO 12.
12.CHECK ECM POWER SUPPLY (BACK-UP) CIRCUIT

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
Trouble diagnosis - specification value
U0101 CAN comm circuitUnbalance steering wheel turning force (torque variation)
Description
Unbalance steering wheel turning force (torque variation).
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Turn the ignition switch OFF to ON.
Perform “EPS” self-diagnosis.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-13, "DTC ...
P0037, P0038 HO2S2 heater
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0037
HO2S2 HTR (B1)
(HO2S heater control circuit low bank 1
sensor 2)
The current amperage in the heated oxygen sensor 2 heater circuit is
...
B14XX air bag diagnosis sensor unit
Description
DTC B1XXX AIR BAG DIAGNOSIS SENSOR UNIT
The air bag diagnosis sensor unit will run self diagnostics when the ignition
switch is turned ON. It has the
potential to set many diagnostic trouble codes which will conform to the B1XXX
format, but will not match any
other SRS diagnostic ...