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Fuel Pump Relay Bypass question

  #1  
Old 07-08-2011, 10:55 AM
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Talking Fuel Pump Relay Bypass question

Omron G8h-UA-007001

I am trying to run a continuity check from PDC to fuel pump C121 harness. Does anyone know which blade on Fuel relay corresponds to wire running to fuel pump harness?

Thanks
 
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Old 07-09-2011, 02:06 AM
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I hope this is what you are looking for.
TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a Voltmeter, measure the Fused Ignition Switch Output Circuit.
Is the voltage above 10.0 volts?
All
Yes ® Go To 5
No ® Repair the open Fused Ignition Switch Output Circuit.
Perform Powertrain Verification Test VER-2A.
5 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure across Terminals 85 and 86 of the Fuel Pump Relay for
resistance.
Is the resistance below 100.0 ohms?
All
Yes ® Go To 6
No ® Replace Fuel Pump Relay.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Fuel Pump Relay Control Circuit for resistance
from PCM to Relay.
Is the resistance below 5.0 ohms?
All
Yes ® Go To 7
No ® Repair the open Fuel Pump Relay Control Circuit.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the Fuel Pump Relay Control Circuit
to ground.
Is the resistance below 5.0 ohms?
All
Yes ® Repair the Fuel Pump Relay Control Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A.
No ® Go To 8
8 Turn Ignition Off.
There are no potential causes remaining.
View repair options.
All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
178
DRIVEABILITY
P-1282 FUEL PUMP RELAY CONTROL CIRCUIT — Continued
 
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Old 07-09-2011, 05:11 PM
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Thanks for the info. It will serve as a useful source of info for future readers. I will check it all out. Right now I have the filter off to check it. I have another post related to that.
 
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Old 07-09-2011, 06:33 PM
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Originally Posted by master tech
I hope this is what you are looking for.
TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a Voltmeter, measure the Fused Ignition Switch Output Circuit.
Is the voltage above 10.0 volts?
Where would that terminal be? #85 86 etc


All
Yes ® Go To 5
No ® Repair the open Fused Ignition Switch Output Circuit.
Perform Powertrain Verification Test VER-2A.
5 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure across Terminals 85 and 86 of the Fuel Pump Relay for
resistance.
Is the resistance below 100.0 ohms?
ok thats clear.

All
Yes ® Go To 6
No ® Replace Fuel Pump Relay.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Fuel Pump Relay Control Circuit for resistance
from PCM to Relay.
Is the resistance below 5.0 ohms?
OK what terminal are we talking about on the fuel pump relay?

All
Yes ® Go To 7
No ® Repair the open Fuel Pump Relay Control Circuit.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the Fuel Pump Relay Control Circuit
to ground.
Is the resistance below 5.0 ohms?
Looking for terminal location again.

All
Yes ® Repair the Fuel Pump Relay Control Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A

No ® Go To 8
8 Turn Ignition Off.
There are no potential causes remaining.
View repair options.
All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
178
DRIVEABILITY
P-1282 FUEL PUMP RELAY CONTROL CIRCUIT — Continued
 


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