Flash Code Chart

FLASH CODE CHART

Flashing pattern	Item	Diagnostic item is detected when...	Reference
2	Vehicle speed signal (from A/T)	Malfunction is detected in output shaft revolution signal that is output from TCM through CAN communication. Improper signal is input while driving.	Refer to P1807 VEHICLE SPEED SENSOR (A/T) .
3	Clutch pressure solenoid signal	Proper voltage is not applied to clutch pressure solenoid valve due to open or short circuit.	Refer to P1822 CLUTCH PRESSURE SOLENOID .
4	2-4WD solenoid signal	Proper voltage is not applied to 2-4WD solenoid valve due to open or short circuit.	Refer to P1823 2-4 SOLENOID .
5	Transfer motor	Transfer motor does not operate properly due to open or short circuit in transfer motor or transfer motor relay.	Refer to P1824 TRANSFER MOTOR .
6	Vehicle speed signal (from ABS)	Malfunction is detected in vehicle speed signal that is output from ABS actuator and electric unit (control unit) through CAN communication. Improper signal is input while driving.	Refer to P1808 VEHICLE SPEED SENSOR (ABS) .
7	CAN communication	Malfunction has been detected from CAN communication line.	Refer to DTC INDEX .
8	AD converter	AD converter system of transfer control unit is malfunctioning.	Refer to P1802 - P1804, P1809 TRANSFER CONTROL UNIT .
9	Transfer fluid temperature	Signal voltage from transfer fluid temperature sensor is abnormally high (Transfer fluid temperature is abnormally low) while driving.	Refer to P1826 TRANSFER FLUID TEMPERATURE .
10	Neutral-4LO switch	Improper signal from neutral-4LO switch is input due to open or short circuit.	Refer to P1810 NEUTRAL-4LO SWITCH .
11	Clutch pressure switch	Improper signal is input due to open or short circuit. Malfunction occurs in clutch pressure switch or hydraulic circuit.	Refer to P1827 CLUTCH PRESSURE SWITCH .
12	Line pressure switch	Improper signal is input due to open or short circuit. Malfunction occurs in line pressure switch or hydraulic circuit.	Refer to P1828 LINE PRESSURE SWITCH .
13	Engine speed signal (from ECM)	Malfunction is detected in engine speed signal that is output from ECM through CAN communication. Improper signal is input while driving.	Refer to P1820 ENGINE SPEED SIGNAL .
14	Accelerator pedal position sensor (from ECM)	Malfunction is detected in accelerator pedal position signal that is output from ECM through CAN communication. Signal voltage from accelerator pedal position sensor is abnormally high or low.	Refer to P1829 THROTTLE POSITION SIGNAL (ECM) .
15	Power supply	Power supply voltage for transfer control unit is abnormally low while driving.	Refer to P1811 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT .
16	4WD shift switch	More than two switch inputs are simultaneously detected due to short circuit of 4WD shift switch.	Refer to P1813 4WD SHIFT SWITCH .
17	ABS operation signal (from ABS)	Malfunction is detected in ABS operation signal that is output from ABS actuator and electric unit (control unit) through CAN communication.	Refer to P1830 ABS OPERATION SIGNAL (ABS) .
18	Wait detection switch	Improper signal from wait detection switch is input due to open or short circuit.	Refer to P1814 WAIT DETECTION SWITCH .
19	Actuator motor	Motor does not operate properly due to open or short circuit in actuator motor. Malfunction is detected in the actuator motor. (When 4WD shift switch is operated and actuator motor is not operated) Malfunction is detected in transfer shift high relay and transfer shift low relay.	Refer to P1817 ACTUATOR MOTOR .
20	Actuator position switch	Improper signal from actuator position switch is input due to open or short circuit. Malfunction is detected in the actuator position switch.	Refer to P1818 ACTUATOR POSITION SWITCH .
21	Actuator circuit	Transfer control device actuator circuit is shorted or open. (Malfunctions are detected when motor relay circuit is open/shorted or relay transfer shift circuit is open/shorted.) Malfunction occurs in transfer control device drive circuit.	Refer to P1819 TRANSFER CONTROL DEVICE .
22	VDC operation signal (from VDC)	Malfunction is detected in VDC operation signal that is output from ABS actuator and electric unit (control unit) through CAN communication.	Refer to P1831 VDC OPERATION SIGNAL (ABS) .
23	TCS operation signal (from TCS)	Malfunction is detected in TCS operation signal that is output from ABS actuator and electric unit (control unit) through CAN communication.	Refer to P1832 TCS OPERATION SIGNAL (ABS) .
24	PNP switch signal (from TCM)	When A/T PNP switch signal is malfunction or communication error between the vehicles.	Refer to P1816 PNP SWITCH .
Repeats flickering every 2 to 5 sec.	-	System normal.	Refer to SYMPTOM DIAGNOSIS
Repeats flickering every 0.25 sec.	Data erase display	Power supply failure of memory back-up. Battery performance is poor.	Refer to P1811 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT .
No flickering	PNP switch or 4WD shift switch	PNP switch or 4WD shift switch circuit is shorted or open.	Refer to P1816 PNP SWITCH or P1813 4WD SHIFT SWITCH .

CAUTION:

If CAN communication is displayed with other DTCs, first perform the trouble diagnosis for CAN communication line.
If ABS operation signal, VDC operation signal or TCS operation signal is displayed, first perform the trouble diagnosis for ABS system.
If Output shaft revolution signal is displayed, first perform the trouble diagnosis for A/T system.

NOTE:

If actuator position switch or actuator circuit is displayed, first erase self-diagnostic results. (Actuator position switch or actuator circuit may be displayed after installing transfer control unit or transfer assembly.)
If clutch pressure switch or line pressure switch is displayed only while driving in reverse, check the continuity of R position on A/T PNP switch. When there is no malfunction found in the electrical system, check the hydraulic system.