STI Home

Printable version

LOCATION:

6.1 Diagnosis - Complaint Related Diagnostic Chart   >   23 Electrical Test Program - Test

Test step Adaptor position Test scope Test connection Test condition Nominal value Possible cause/Remedy 1.0 1 Overvoltage protection relay module (87E, 7-pole) (K1/1) - Ignition: OFF LED All: OFF Check overvoltage protection relay module (K1/1) (Figure 1). 2.0 1 Solenoid valve relay (A7k1) - Ignition: OFF LED All: OFF Check solenoid valve relay (A7k1) (Figure 2). 3.0 1 Overvoltage protection relay module (87E, 7-pole) (K1/1) Connect to Ignition: ON 11 - 14 V LED : ON : ON ABS malfunction indicator lamp: ON Wiring interrupted, Battery not properly charged, Check fuse for overvoltage protection relay module (K1/1), Check ABS malfunction indicator lamp (A1e17), Check solenoid valve relay (A7k1), Check overvoltage protection relay module (K1/1). 4.0 1 Generator, circuit 61 - Engine: RUN BRIEFLY LED : OFF Wiring interrupted, Terminal block (terminal 30/30Ü/61e/87L) (X4/10) poor contact (Figure 4), Generator or generator wiring defective. 4.0 1 Stop lamp switch (S9/1) - Ignition: ON Depress brake pedal LED : ON Wiring interrupted, check stop lamp switch (S9/1). 6.0 2 Solenoid valve relay (A7k1) - Ignition: ON LED : ON : ON : ON Malfunction indicator lamp: OFF Terminal block (terminal) 30/30U/61e/87L) (X4/10) poor contact (Figure 4), Wiring interrupted, Check solenoid valve relay (A7k1) (Figure 2) 7.0 3 Diode in solenoid valve relay (A7k1) Connect to Ignition: ON 0.4 - 1.5 V LED : ON : ON Check solenoid valve relay (A7k1). 8.0 4 Left front axle vehicle speed sensor (L6/1) Internal resistance Connect to Ignition: ON 0.85 - 2.3 k Wiring interrupted, Check left front axle vehicle speed sensor (L6/1). 9.0 4 Left front axle vehicle speed sensor (L6/1) Insulation resistance Connect to Ignition: ON Press button: > 20 k Check left front axle vehicle speed sensor (L6/1). 10.0 5 Right front axle vehicle speed sensor (L6/2) Internal resistance Connect to Ignition: ON 0.85 - 2.3 k Wiring interrupted, Check right front axle vehicle speed sensor (L6/2). 11.0 5 Right front axle vehicle speed sensor (L6/2) Insulation resistance Connect to Ignition: ON Press button: > 20 k Check right front axle vehicle speed sensor (L6/2). 12.0 6 Rear axle vehicle speed sensor (L6) Internal resistance Connect to Ignition: ON 0.6 - 1.6 k Wiring interrupted, Check rear axle vehicle speed sensor (L6). 13.0 6 Rear axle vehicle speed sensor (L6) Insulation resistance Connect to Ignition: ON Press button: > 20 k Check rear axle vehicle speed sensor (L6). 14.0 8 Left front axle solenoid valve (A7y2) Internal resistance Connect to Ignition: OFF Press button: 0.7 - 2.2 Wiring interrupted, Check ABS hydraulic unit (A7). 15.0 9 Right front axle solenoid valve (A7y2) Internal resistance Connect to Ignition: OFF Press button: 0.7 - 2.2 Wiring interrupted, Check ABS hydraulic unit (A7). 16.0 10 Rear axle solenoid switch (A7y3) Internal resistance Connect to Ignition: OFF Press button: 0.7 - 2.2 Wiring interrupted, Check ABS hydraulic unit (A7). 17.0 4 Left front axle speed sensor (L6/1) Voltage Connect to Raise vehicle Ignition: ON Turn wheel at approximately one revolution/second. 0.1 V~ Open circuit or wires connected incorrectly, Excessive wheel bearing play, Check left front axle vehicle speed sensor (L6/1). 18.0 8 Left front axle solenoid valve (A7y1) Pressure retention remains connected Vehicle raised Ignition: ON Turn wheel at approximately one revolution/second . Press switch: "P=". Depress brake pedal. LED : ON : ON : ON : ON Wheel must be able to rotate. Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Brake lines on ABS hydraulic unit (A7) reversed, Wires reversed, Check ABS hydraulic unit (A7). 19.0 8 Left front axle solenoid valve (A7y1) Pressure reduction remains connected Vehicle raised Ignition: ON Depress brake pedal. Press switch: "P". Turn wheel at approximately one revolution/second LED : ON : ON : ON : ON : ON Wheel must be able to rotate. Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Check return/pressure pump relay (A7k2) (Figure 2), Check ABS hydraulic unit (A7) 20.0 5 Right front axle speed sensor (L6/2) Voltage Connect to Raise vehicle Ignition: ON Turn wheel at approximately one revolution/speed 0.1 V~ Open circuit or wires connected incorrectly, Excessive wheel bearing play, Check right front wheel speed sensor (L6/2). 21.0 9 Right front axle solenoid valve (A7y2) Pressure retention remains connected Vehicle raised Ignition: ON Turn wheel at approximately one revolution/second . Press switch: "P=". Depress brake pedal. LED : ON : ON : ON : ON Wheel must be able to rotate. Wires connected incorrectly, Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Check ABS hydraulic unit (A7). 22.0 9 Right front axle solenoid valve (A7y2) Pressure reduction remains connected Vehicle raised Ignition: ON Twice depress brake pedal. Press switch: "P". Turn wheel at approximately on revolution/second . LED : ON : ON : ON : ON : ON Wheel must be able to rotate. Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Check return/pressure pump relay (A7k2) (Figure 2), Check ABS hydraulic unit (A7) 23.0 6 Rear axle vehicle speed sensor (L6) Voltage Connect to Raise vehicle Ignition: ON Turn wheel at approximately one revolution/second. 0.1 V~ Wires interrupted, Rear axle vehicle speed sensor dirty, Check rear axle vehicle speed sensor (L6). 24.0 10 Rear Axle solenoid valve (A7y3) Pressure retention remains connected Vehicle raised Ignition: ON Turn wheel at approximately one revolution/second. Press switch: "P=". Depress brake pedal. LED : ON : ON : ON : ON Wheel must be able to rotate. Wire connected incorrectly, Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Brake lines on hydraulic unit interchanged, Check ABS hydraulic unit (A7). 25.0 10 Left rear axle solenoid valve (A7/3y3) Pressure reduction remains connected Vehicle raised Ignition: ON Apply brake pedal. Press switch: "P". Turn wheel at approximately one revolution/second. LED : ON : ON : ON : ON : ON Wheel must be able to rotate. Ground (ABS hydraulic unit bracket) (W14) poor contact (Figure 10), Return/pressure pump relay (A7k2) (Figure 2), ABS/ASR hydraulic unit (A7/3).