DTC Troubleshooting Index

DTC TROUBLESHOOTING INDEX

DTC	VTM-4 Indicator	Detection Item	Possible Cause	Reference
21-1	ON	Left-Front Wheel Speed Sensor	Sensor is defective Open or short in the wire harness VTM-4 control unit is defective VSA modulator-control unit is defective	(see DTC TROUBLESHOOTING )
21-2	ON	Left-Front Wheel Speed Sensor
22-1	ON	Right-Front Wheel Speed Sensor
22-2	ON	Right-Front Wheel Speed Sensor
23-1	ON	Left-Rear Wheel Speed Sensor		(see DTC 23-1, 23-2, 24-1, 24-2: REAR WHEEL SPEED SENSORS )
23-2	ON	Left-Rear Wheel Speed Sensor
24-1	ON	Right-Rear Wheel Speed Sensor
24-2	ON	Right-Rear Wheel Speed Sensor
26-1	ON	VSA Modulator-Control Unit or Wire Harness	Open or short in the wire harness from the VTM-4 control unit to VSA modulator VSA modulator-control unit is defective	(see DTC 26-1: VSA MODULATOR-CONTROL UNIT OR WIRE HARNESS )
37-1	ON	Engine RPM Signal Circuit	Open or short in the wire harness VTM-4 control unit or PCM is defective	(see DTC 37-1, 38-1: ENGINE RPM SIGNAL CIRCUIT )
38-1	ON	Engine RPM Signal Circuit		(see DTC 37-1, 38-1: ENGINE RPM SIGNAL CIRCUIT )
41-1	ON	CAN Communication (PCM/VSA System)	Open or short in the wire harness from the VTM-4 control unit to PCM/VSA VTM-4 control unit or PCM is defective or VSA modulator-control unit is defective	(see DTC 41-1, 41-2: CAN COMMUNICATION (PCM/VSA SYSTEM) )
41-2	ON	CAN Communication (PCM/VSA System)		(see DTC 41-1, 41-2: CAN COMMUNICATION (PCM/VSA SYSTEM) )
42-1	ON	Rear Differential Fluid Temperature Sensor	Sensor is defective Open or short in the wire harness VTM-4 control unit is defective	(see DTC 42-1, 42-2, 43-1: DIFFERENTIAL FLUID TEMPERATURE SENSOR )
42-2	ON
43-1	ON
44-1	ON	VTM-4 Relay	Relay is defective Open or short in the wire harness VTM-4 control unit is defective	(see DTC 44-1: VTM-4 RELAY )
51-1	ON	Left Clutch Electromagnetic Coil	Electromagnetic coil is defective Open or short in the wire harness VTM-4 control unit is defective	(see DTC 51-1, 52-1, 53-1, 53-2, 54-1: LEFT CLUTCH ELECTROMAGNETIC COIL )
52-1	ON
53-1	ON
54-1	ON
54-1	ON
53-2	ON	Left or Right Clutch Electromagnetic Coil	Electromagnetic coil is defective Open or short in the wire harness VTM-4 control unit is defective	DTC Troubleshooting (see DTC 51-1, 52-1, 53-1, 53-2, 54-1: LEFT CLUTCH ELECTROMAGNETIC COIL ) DTC Troubleshooting (see DTC 53-2, 55-1, 56-1, 57-1, 58-1: RIGHT CLUTCH ELECTROMAGNETIC COIL )
55-1	ON	Right Clutch Electromagnetic Coil	Electromagnetic coil is defective Open or short in the wire harness VTM-4 control unit is defective	(see DTC 53-2, 55-1, 56-1, 57-1, 58-1: RIGHT CLUTCH ELECTROMAGNETIC COIL )
56-1	ON
57-1	ON
58-1	ON
59-1	ON	Right/Left Clutch Electromagnetic Coil Power Supply	Low battery voltage Fault in the charging system VTM-4 control unit is defective	(see DTC 59-1: RIGHT/LEFT CLUTCH ELECTROMAGNETIC COIL POWER SUPPLY )
73-1	ON	MAP (manifold absolute pressure) Sensor or PCM	Fault in the PCM system/MAP (manifold absolute pressure) sensor is defective	(see DTC 73-1: MAP (MANIFOLD ABSOLUTE PRESSURE) SENSOR OR PCM )
76-1	ON	Rear Differential Clutch Warning System	Sensor is defective Open or short in the wire harness VTM-4 control unit is defective VSA modulator-control unit is defective	(see DTC 73-1: MAP (MANIFOLD ABSOLUTE PRESSURE) SENSOR OR PCM )
77-1	ON	PCM	PCM is defective	(see DTC 77-1: PCM )
78-1	ON	VTM-4 Control Unit	VTM-4 control unit is defective	(see DTC 78-1: VTM-4 CONTROL UNIT )
*: DTCs are indicated by the VTM-4 indicator when the data link connector (DLC) is connected to the HDS.