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...is flashing a 4-5 at startup. It goes away after a few minutes, after driving about 5 miles. What do you guys think? Would it be worth being without my car for a day while Ford tries to fix it?
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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Joined: May 2000
Posts: 222
CEG\'er
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CEG\'er
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discussed this recently - search the archives.
AL
Red '98 SVT E0 3098/6535
DMD
other stuff
and a Bullitt fuel door
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Posts: 667
Veteran CEG\'er
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Veteran CEG\'er
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Posts: 667 |
The following is from the Ford TSP:
45=LH Primary Crash Sensor Not Mounted to Vehicle Properly
Normal Operation
The air bag diagnostic monitor measures the resistance between Pin C2-21, Circuit 9 (BR) and Pin C1-3, Circuit 91 (BK/R), diagnostic monitor reference ground. If the air bag diagnostic monitor measures a difference of more than 2.0 ohms between Pin C2-21 and Pin C1-3, it will flash Code 45.
Note that Circuit 9 (BR) is grounded to the side of the LH primary crash front air bag sensor case and the case is grounded to the vehicle at its mounting point.
Possible Causes
High resistance on Pin C2-21, Circuit 9 (BR) to ground can be caused by:
(1) A poor connection due to loose mounting or dirt at the LH primary crash front air bag sensor and bracket mounting location.
(2) An open or damaged wire Circuit 9 (BR) from Pin C2-21 of the air bag diagnostic monitor harness connector to LH primary crash front air bag sensor.
(3) An open circuit inside LH primary crash front air bag sensor.
96 Contour SE
Duratec V6 24-valve 2.5L ATX
108,000 mi.
Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil
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Thanks for the info GeoPappas.
So can I take this connector off and clean it and check it myself without blowing the airbags? I assumed it was a bad connection since it goes away once in awhile.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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Joined: Dec 2001
Posts: 667
Veteran CEG\'er
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I'm not a mechanic and I've never worked on the air bag system, so please take the following with a LARGE grain of salt:
Having said that, it seems that you can fix the connector yourself. Here are the instructions from the Ford TSP:
WARNING: THE BACK-UP POWER SUPPLY ENERGY MUST BE DEPLETED BEFORE ANY AIR BAG COMPONENT SERVICE IS PERFORMED. TO DEPLETE BACK-UP POWER SUPPLY ENERGY, DISCONNECT THE POSITIVE BATTERY CABLE AND WAIT ONE MINUTE TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Note: When the battery (10653) has been disconnected or reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 18 km (10 miles) or more to relearn the strategy.
The air bag diagnostic monitor includes an internal back-up power supply. This feature provides sufficient back-up power to deploy the air bags in the event that the battery or battery cables are damaged in a collision before the crash sensors close. The back-up power supply will deplete its stored energy approximately one minute after the positive battery cable is disconnected.
Sensor and Bracket, Front
Removal
1. WARNING: THE ELECTRICAL CIRCUIT NECESSARY FOR SYSTEM DEPLOYMENT IS POWERED DIRECTLY FROM THE BATTERY. TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY, THE POSITIVE BATTERY CABLE MUST BE DISCONNECTED PRIOR TO SERVICING OR REPLACING ANY SYSTEM COMPONENTS.
Disconnect battery ground cable (14301).
2. Disconnect positive battery cable and wait one minute for back-up power supply energy to be depleted.
3. Remove two screws and grille from grille opening panel reinforcement.
4. Remove two screws and RH and LH parking lamps (13200).
5. Remove 12 screws from radiator grille opening panel reinforcement (8A284).
6. Disconnect RH or LH primary crash sensor electrical connector.
7. Remove three retaining screws and RH or LH primary crash front air bag sensor and bracket (14B004) from radiator support (16138).
Installation
1. Position RH or LH primary crash front air bag sensor and bracket to radiator support and secure with three retaining screws. Tighten screws to 9-13 N-m (80-115 lb-in).
2. Connect RH or LH primary crash sensor electrical connector.
3. Position radiator grille opening panel reinforcement and secure with 12 screws. Tighten screws to 5-7 N-m (44-62 lb-in).
4. Install RH and LH parking lamps and secure with two screws. Tighten screws to 5-7 N-m (44-62 lb-in).
5. Installradiator grille (8200) and secure with two screws. Tighten screws to 5-7 N-m (44-62 lb-in).
6. Reconnect battery positive cable.
7. Reconnect battery ground cable.
8. Prove out air bag system.
96 Contour SE
Duratec V6 24-valve 2.5L ATX
108,000 mi.
Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil
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Joined: Aug 2000
Posts: 8,301
Addicted CEG\'er
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Cool, thats just what I wanted to know. Thanks 
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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