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413-13-9 Parking Aid 413-13-9 DIAGNOSIS AND TESTING (Continued) Pin Number(s) Circuit Designation/Description Normal Condition/Measurement 1 1441 W (SIG_LC) No object in Sensor’s field of view Sensor Signal LH Corner Voltage = approx. 7.8V ± 0.5V 2 1442 G-W (SIG_LM) As above Sensor Signal LH Middle 3 1443 G (SIG_RM) As above Sensor Signal RH Middle 4 1444 L-Y (SIG_RC) As above Sensor Signal RH Corner 5 1439 Y-R (Sensor_feed) 8.5V ±0.5V Sensor Feed 6 1440 G-Y (GND) < 0.5V Sensor ground 7 NC 8 NC 9 NC 10 NC 11 NC 12 57 E B (GND) < 0.5V Ground 13 140D R-B (KL15) + 12V Power Reverse switch 14 1355 BR (Disable) O.C.= trailer not connected 15 NC 16 NC 17 NC 18 NC 19 NC 20 70 SB-W (Diagnose) Diagnostic Signal 21 NC 22 1347 B-P (Speaker -) When Spkr is activated = approx. 2V less than Speaker - the Spkr Supply Voltage. 23 1438 G (Speaker +) With Spkr Connected = approx. 1.5V less than Speaker + VBat Pinpoint tests PINPOINT TEST A : SENSOR SHORT CIRCUIT TO VBAT Test Step Result / Action to Take A1 CHECK SENSOR SIGNAL WIRE Remove bumper. Refer to Bumper section for instructions for removal Yes of bumper Go to A2 Unplug sensor. No Go to B1 Is Voltage < 1V? G56521 en |