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You have to ground the ALDL. The ALDL is located under the dash board, in the center.
To ground the ALDL, you take a paper clip and insert the ends into the two right most terminals on the top row of the connector. Turn the ignition to RUN, but do not start the engine.
The check engine light will begin to flash two digit codes. The first code will be 12 and will be presented as Flash/pause/2 flashes. Each code will come up three times.
DTC's are as follows:
12 System normal
13 oxygen sensor circuit open
14 coolant sensor high resistance or shorted
15 coolant sensor circuit low or open
16 direct ignition system (DIS) fault in circuit
17 cam position sensor fault
18 crank or cam sensor error
19 crank sensor circuit fault
21 tps sensor out of range
22 tps sensor signal voltage low
23 intake air temp sensor out of range, low
24 vehicle speed (vss) sensor circuit fault
25 air temp sensor sensor out of range, high
26 quad-driver module (computer) circuit #1 fault
27 quad-driver module (computer) 2nd gear circuit
28 quad-driver module (computer) circuit #2 fault
29 quad driver module (computer) 4th gear circuit
31 cam position sensor fault
32 egr circuit fault
33 map sensor signal out of range, high
34 map sensor signal out of range, low
35 idle air control sensor circuit fault
36 ignition system circuit error
38 brake input circuit fault
39 clutch input circuit fault
41 cam sensor circuit fault, igntion control circuit fault
42 electronic spark timing (EST) circuit grounded
43 knock sensor
or electronic spark control circuit fault
44 oxygen sensor lean exhaust
45 oxygen sensor rich exhaust
46 pass-key II circuit or ps.pressure switch circuit fault
47 pcm-bcm data circuit
48 misfire diagnosis
51 calibration error, mem-cal, ecm or eeprom failure
52 engine oil temperature circuit, low temperature indicated
53 battery voltage error or egr or pass-key II circuit
54 egr system failure or fuel pump circuit low voltage
55 a/d converter error or pcm not grounded or lean fuel or frounded reference voltage
56 quad-driver module #2 circuit
57 boost control problem
58 vehicle anti-theft system fuel enable circuit
61 a/c system performance or degraded oxygen sensor signal
62 engine oil temperature high temperature indicated
63 oxygen sensor right side circuit open or map sensor out of range
64 oxygen sensor right side lean exhaust indicated
65 oxygen sensor right side rich exhaust indicated
66 a/c pressure sensor circuit low pressure
67 a/c pressure sensor circuit or a/c clutch circuit failure
68 a/c compressor relay circuit failure
69 a/c clutch circuit head pressure high
70 a/c refrigerant pressure circuit high
71 a/c evaporator temperature sensor circuit low
72 gear selector switch circuit
73 a/c evaporator temperature circuit high
75 digital egr #1 solenoid error
76 digital egr #2 solenoid error
77 digital egr #3 solenoid error
79 vehicle speed sensor (vss) circuit signal high
80 vehicle speed sensor (vss) circuit signal low
81 brake input circuit fault
82 ignition control (IC) 3X signal error
85 prom error
86 analog/digital ecm error
87 eeprom error
99 power management
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∙ 14y ago
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What is the weight of a 1989 Cadillac brougham?
It varies... They range between 4,200lbs and 4,600lbs depending on the options. My '89 Brougham d'Elegance weighs 4,536lbs.
Fuel requirements for 1990 Cadillac Brougham?
87 Unleaded. But use 89 once in a while to keep the engine clean.
What size tire does a 89 Cadillac Brougham?
225/75R15's are stock Alternatively 235/75 and 235/70R15 will work.
Did the 1979 Cadillac come with a vacuum pump?
NO vac pump in the '79 87&89 Brougham 85-87 deville 89-93 deville 86-86 eldorado 85-87 fleetwood 89-93 fleetwood 86-86 Seville
When did Henry Peter Brougham die?
Henry Peter Brougham died on May 7, 1868 at the age of 89.
How old was Henry Peter Brougham at death?
Henry Peter Brougham died on May 7, 1868 at the age of 89.
How do you replace the window regulater on a 89 Cadillac deville?
how do you replace the window regulater on a 89 cadillac deville?
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What's the Question?
What is the spark plug gap setting for a 89 Cadillac deville?
What is the spark plug gap setting for a 89 cadillac deville?
24 inch wheels fit on my 89 brougham?
it will fit but you will spend money on the car
Horsepower 89 Cadillac 4.5?
155
How old is Henry Peter Brougham?
Henry Peter Brougham was born on September 19, 1778 and died on May 7, 1868. Henry Peter Brougham would have been 89 years old at the time of death or 236 years old today.
