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DTC Troubleshooting Index

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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
22-1 ON Right-Front Wheel Speed Sensor
22-2 ON
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
24-1 ON Right-Rear Wheel Speed Sensor
24-2 ON
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
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
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
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.