C1228

DTC C1228: 4L/N Switch Circuit Short

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

1) Clear DTC using scan tool.
2) Select transfer switch to "4L-lock" position and keep its position for 1 min.
3) Check DTC.

Troubleshooting

1.
Was "4WD control system check" performed?
YES -
Go to Step 2.
NO -
Go to 4WD Control System Check 4WD Control System Check:Motor-Shift Type (Transfer with Shift Actuator).

2. 4L/N switch circuit check

Disconnect 4L/N switch connector with ignition switch OFF.
Check for proper connection to terminal of 4L/N switch connector.
If connection is OK, measure voltage between "PNK/WHT" terminal of 4L/N switch connector and vehicle body ground with ignition switch ON.

Is it 10 - 14 V?
YES -
Go to Step 3.
NO -
Go to Step 4.

3. 4L/N switch check

Check 4L/N switch referring to Inspection Transfer Assembly Inspection:Motor-Shift Type (Transfer with Shift Actuator).

Is switch in good condition?
YES -
Substitute a known-good 4WD control module and recheck.
NO -
Replace 4L/N switch.

4. Wire harness check

Disconnect connector from 4WD control module connector "E91" with ignition switch OFF.
Check for proper connection to "E91-13" terminal of 4WD control module connector.
If OK, measure resistance between "PNK/WHT" terminal of 4L/N switch connector and "E91-13" terminal of 4WD control module connector.

Is it 1 Mohms or more?
YES -
Substitute a known-good 4WD control module and recheck.
NO -
"PNK/WHT" wire is shorted to ground circuit.