Diagnostic Trouble Code Table

HINT:

Inspect the fuse before inspecting the suspected areas as shown in the table below.
If no abnormality is found when the parts are inspected, inspect the suspension control ECU.
If a trouble code is displayed during the DTC check, check the circuit listed for that code. For details of each code, refer to the information in the table below.

AIR SUSPENSION SYSTEM

DIAGNOSTIC TROUBLE CODE TABLE

DTC Code	Detection Item	Trouble Area	OFF Indicator Light (*1)	Memory (*2)
C1713/13	Right Rear Height Control Sensor Circuit	Height control sensor sub-assembly rear RH Right rear height control sensor circuit Suspension control ECU	Comes on (*3)	DTC stored
C1714/14	Left Rear Height Control Sensor Circuit	Height control sensor sub-assembly rear LH Left rear height control sensor circuit Suspension control ECU	Comes on (*3)	DTC stored
C1715/15	Front Acceleration Sensor RH	Acceleration sensor assembly front RH Right front acceleration sensor circuit Suspension control ECU	Goes off	DTC stored
C1716/16	Front Acceleration Sensor LH	1. Suspension control ECU (Acceleration sensor front LH is a built-in equipment)	Goes off	DTC stored
C1717/17	Rear Acceleration Sensor	Acceleration sensor rear Rear acceleration sensor circuit Suspension control ECU	Goes off	DTC stored
C1791/91	Front Acceleration Sensor RH	Acceleration sensor assembly front RH Right front acceleration sensor circuit Suspension control ECU	Goes off	DTC stored
C1792/92	Front Acceleration Sensor LH	Suspension control ECU (Acceleration sensor front LH is a built-in equipment)	Goes off	DTC stored
C1793/93	Rear Acceleration Sensor	Acceleration sensor rear Rear acceleration sensor circuit Suspension control ECU	Goes off	DTC stored
C1725/21	Front Damping Force Control Actuator RH Circuit	Absorber control actuator front RH Right front absorber control actuator circuit Suspension control ECU	Goes off	DTC stored
C1726/22	Front Damping Force Control Actuator LH Circuit	Absorber control actuator front LH Left front absorber control actuator circuit Suspension control ECU	Goes off	DTC stored
C1727/23	Rear Damping Force Control Actuator RH Circuit	Absorber control actuator rear RH Right rear absorber control actuator circuit Suspension control ECU	Goes off	DTC stored
C1728/24	Rear Damping Force Control Actuator LH Circuit	Absorber control actuator rear LH Left rear absorber control actuator circuit Suspension control ECU	Goes off	DTC stored
C1733/33	Rear Height Control Gate Solenoid Valve Circuit Malfunction	Gate solenoid valve Gate solenoid valve circuit Suspension control ECU	Comes on	DTC stored
C1734/34	Rear Height Control Leveling Solenoid Valve Circuit Malfunction	Leveling solenoid valve Leveling solenoid valve circuit Suspension control ECU	Comes on	DTC stored
C1735/35	Exhaust Solenoid Valve Circuit	Exhaust solenoid valve Exhaust solenoid valve circuit Suspension control ECU	Comes on	DTC stored
C1744/44	Tank Solenoid Valve Circuit	Tank solenoid valve Tank solenoid valve circuit Suspension control ECU	Goes off	DTC stored
C1741/41	Air Suspension Relay Circuit	AIR SUS relay AIR SUS relay circuit Suspension control ECU	Comes on	DTC stored
C1742/42	Height Control Compressor Circuit	Height control compressor assembly Height control compressor circuit Suspension control ECU	Comes on	DTC stored
C1751/51	Continuous Electric Current to Height Control Compressor	Height control compressor assembly Height control compressor circuit Height control sensor link sub-assembly rear Height control sensor sub-assembly rear Relief valve AIR SUS relay comes off Air leakage from the air tube or each valve Clogging in the air tube or each valve Suspension control ECU	Comes on	DTC stored
C1761/61	ECU Malfunction	Suspension control ECU	Comes on	DTC stored
C1774/74	Power Source Circuit	Battery Power source circuit Suspension control ECU	Goes off	DTC stored
C1776/76	Speed Sensor Circuit	Speed sensor Speed sensor circuit Skid control ECU assembly Suspension control ECU	Goes off	DTC stored
C1794/94	Front Speed Sensor RH Circuit Malfunction	Right front speed sensor Right front speed sensor circuit Skid control ECU assembly Suspension control ECU	Goes off	DTC stored
C1795/95	Front Speed Sensor LH Circuit Malfunction	Left front speed sensor Left front speed sensor circuit Skid control ECU assembly Suspension control ECU	Goes off	DTC stored
C1777/77	Steering Angle Sensor Circuit	Steering sensor Steering angle sensor circuit Suspension control ECU	Goes off	DTC stored
C1787/87	Absorber Control Switch Circuit	Absorber control switch (Suspension control switch) Absorber control switch circuit Suspension control ECU	-	-
C1779/79	Crankshaft Position Sensor Circuit	Crankshaft position sensor Crankshaft position sensor circuit ECM Suspension control ECU	Goes off	DTC stored
C1797/97	Crankshaft Position Sensor Circuit	Crankshaft position sensor Crankshaft position sensor circuit ECM Suspension control ECU	Goes off	DTC stored
C1782/82	Stop Light Switch Circuit	Stop light switch assembly Stop light switch circuit Suspension control ECU	-	-
C1783/83	Door-Courtesy Switch Circuit	Door courtesy light switch assembly Back door lock assembly (Back door courtesy light switch) Door courtesy light switch circuit Body ECU Back door ECU Suspension control ECU	-	-
C1786/86	Height Control Switch Circuit	Height control switch Height control switch circuit Suspension control ECU	-	-
C1788/88	Height Control OFF Switch Circuit	Height control OFF switch (Suspension control switch) Height control OFF switch circuit Suspension control ECU	-	-
HINT: 1: For codes marked with a "Comes on" in the "OFF Indicator Light" column, the height control manual indicator light blinks at 1 second intervals. 2: The codes marked with a "DTC stored" in the "Memory" column are stored in the memory even when the ignition switch is OFF, but the codes marked with "-" are not. 3: Height control OFF indicator light blinks when the vehicle speed is at 3 km/h (1.9 mph) or higher. 4: Since the relief pressure of the compressed air is 980 kPa (10 kgf*cm² , 142 psi), if the vehicle height control is attempted on a steeply sloping road, when the vehicle is overloaded, or when the vehicle is jacked up with the engine running, code "C1751/51" may be output and the vehicle height control may be suspended (This is not abnormal). In this case, however, the vehicle height operation is resumed approx. 10 min. after the ignition switch is turned ON after the ECU detects the first error. If ECU detects another error, it takes 70 minutes until the vehicle height control is resumed.