Antilock Brakes / Traction Control Systems

C1997; PRESSURE SENSOR MAIN/PRIMARY 5 VOLT SUPPLY CIRCUIT FAILURE

G307559t45: CHECK THE PRESSURE SENSOR 5 VOLT SUPPLY
1. Turn the ignition switch to the OFF position.
2. Disconnect the pressure sensor electrical connector EC34.
3. Turn the ignition switch to the ON position.
4. Measure the voltage between EC34, pin 01 (BG) and GROUND.
5. Measure the voltage between EC34, pin 03 (YU) and GROUND.
^ Is either voltage less than 5 volts?
-> Yes
-> No

G307559t46: CHECK THE PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT FOR HIGH RESISTANCE
1. Turn the ignition switch to the OFF position.
2. Disconnect the ABS/DSC module electrical connector EC30.
3. Measure the resistance between the EC34, pin 03 (YU) and EC30, pin 18 (GU).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G307559t48: CHECK THE PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between EC34, pin 03 (YU) and GROUND.
^ Is the resistance less than 10,000 ohms?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G307559t6: CHECK THE GROUND TO THE PRESSURE SENSOR
1. Measure the resistance between EC34, pin 01 (13G) and GROUND.
^ Is the resistance greater than 5 ohms?
-> Yes
-> No
Contact dealer technical support for advice on possible ABS/DSC module failure.

G307559t47: CHECK THE PRESSURE SENSOR GROUND CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between EC34, pin 01 (BG) and EC30, pin 19 (BG).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.
-> No
Contact dealer technical support for advice on possible ABS/DSC module failure.

G307559t49: CHECK THE PRESSURE SENSOR GROUND CIRCUIT FOR SHORT TO B+
1. Measure the voltage between the pressure sensor electrical connector EC34, pin 01 (BG) and GROUND.
^ Is the voltage greater than 3 volt?
-> Yes
REPAIR the circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G307559t50: CHECK THE PRESSURE SENSOR SIGNAL CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between EC34, pin 02 (GU) and EC30, pin 20 (GU).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G307559t51: CHECK THE PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between EC34, pin 02 (GU) and GROUND.
^ Is the resistance less than 10,000 ohms?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G307559t52: CHECK THE PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO B+
1. Measure the voltage between EC34, pin 02 (GU) and GROUND.
^ Is the voltage greater than 5 volts?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.
-> No
INSTALL a new pressure sensor. CLEAR the DTC. TEST the system for normal operation. if the DTC is repeated, contact dealer technical support for advice on possible ABS/DSC module failure.