Fuel Pump Relay Bypass question
#1
#2
Join Date: Apr 2007
Location: Near Sacramento,ca
Posts: 11,545
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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
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
#3
#4
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?
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?
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.
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?
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
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