Логотип Сadillac

Типы диагностических разъемов применяемых на
Сadillac

Тип ALDL - OBD I

 

Тип разъема ALDL - 12-и контактный прямоугольныйдиагностический разъем

Марки и года (ориентировочно): все модели 1988-1994 гг. Типичное расположение: в салоне под торпедой со стороны водителя

Диагностический ALDL 12-и контактный прямоугольный диагностический разъем Сadillac

Контакт   Назначение

A

 

МАССА

B

 

Диагностический терминал (соединить контакт В с контактом А перемычкой, включить зажигание, лампа "MIL" будет выдовать серии вспышек длинная вспышка(десятки) короткие вспышки (единицы) между кодом ошибки большая пауза. Сначало будет показан код 12 (вспышка короткая пауза и две быстрые вспышки), это означает начало диагностики, а затем коды ошибок. Каждая ошибка показываеться 3-и раза подряд, а затем идет следующая ошибка и так по кругу пока стоит перемычка.

C

 

 

D

 

 

E

 

 

F

 

 

G

 

+12

M

 

К-линия диагностики

Коды самодиагностики Сadillac 1992-1993

Trouble code Fault location Probable cause
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds. Engine was at normal operating temperature and had been running for at least 2 minutes after start with a throttle angle above 5%. Wiring open circuit, O2S, ECM
14 Coolant temperature sensor signal indicates a temperature of over 275° F for 2 seconds. Wiring short circuit to ground, ECT sensor, ECM
15 Coolant temperature sensor signal indicates a temperature colder than -27° F for 30 seconds after the engine has been running for at least 30 seconds. Wiring open circuit, ECT sensor, ECM
21 TPS voltage was above 2.5 volts for 8 seconds when the MAP sensor signal showed manifold vacuum to be 15 pounds or more. Wiring open circuit/short circuit to positive, TP sensor, ECM
22 TPS voltage was under 0.2 volts for when the engine was running. Wiring open circuit/short circuit to ground, TP sensor, ECM
23 Inlet air temperature sensor signal showed an air temperature below -22° F after the engine has been running for 5 minutes. Wiring open circuit, IAT sensor, ECM
24 When engine speed was between 1200 and 4400 RPM and throttle position angle was less than 3%, the MAP signal showed low voltage (high manifold vacuum) for at least 5 seconds. Wiring open circuit/short circuit to ground, VSS, ECM
25 Inlet air temperature sensor signal showed an air temperature over 302° F after the engine has been running for 5 minutes. On Brougham models the inlet air temperature sensor signal shows a temperature above 297° F with an engine speed greater than 35 MPH. Wiring short circuit to ground, IAT sensor, ECM
32 EGR open command did not change the MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal. Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM
33 MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 4%. Wiring short circuit to positive, hose blocked/leaking, MAP sensor, ECM
34 MAP sensor signal voltage was too low (high vacuum) when engine speed was over 1200 RPM. Wiring open circuit/short circuit to ground, MAP sensor, ECM
42 The EST signal did not change when the ECM applied bypass voltage to the ignition module. Wiring open circuit/short circuit to ground, ICM, ECM
43 The ECM did not detect a knock signal during near wide open throttle operation with coolant temperature above 194° F or the knock signal was present for 4 seconds or more during normal engine operation. Wiring open circuit/short circuit to ground/short circuit to positive, KS incorrectly fitted, KS, insecure PROM, ECM
44 Oxygen sensor voltage was under 0.25 volts for 50 seconds of closed loop operation. On Brougham models the oxygen sensor voltage was under 0.2 volts. Wiring open circuit/short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, O2S, ECM
45 Oxygen sensor voltage was over 0.75 volts for 30 seconds with a throttle angle above 20%. On Brougham models the oxygen sensor voltage was over 0.7 volts. Wiring open circuit, fuel pressure high, injector(s) leaking, O2S contamination, EVAP canister purge valve, TP sensor, EGR system, O2S, ECM
51 PROM error. Insecure PROM, incorrect PROM, ECM
54 Fuel pump voltage was not present at fuel pump sense line for 2 seconds after the ECM has sent the fuel pump on command. Wiring open circuit/short circuit to ground, fuel pump relay, engine oil pressure warning lamp switch
55 ECM error. Replace ECM. ECM

Тип OBD-II

Тип разъема - 16-ти контактный разъем OBD-II в форме трапеции

Марки и года (ориентировочно): все модели после 1995 г. Типичное расположение: в салоне под торпедой со стороны водителя

Диагностический 16-ти контактный разъем OBD-II Сadillac

Контакт   Назначение

2

 

J1850 Шина+

4

 

Заземление кузова

5

 

Сигнальное заземление

6

 

Линия CAN-High, J-2284

7

 

К-линия диагностики (ISO 9141-2 и ISO/DIS 14230-4)

10

 

J1850 Шина-

14

 

Линия CAN-Low, J-2284

15

 

L-линия диагностики (ISO 9141-2 и ISO/DIS 14230-4)

16

 

Питание +12В от АКБ

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