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Number: 002/93
FUEL PUMP DIAGNOSTIC PROCEDURES C O NTD.
9. If the value of fuel pressure (Max.) is below standard,
measure the voltage at the fuel pump connector
(vehicle side) using the procedures below.
a) Reinstall the jumper wire and turn the Ignition on.
Refer to steps 6 and 7 of the previous page.
b) Connect test leads to the fuel pump positive and
negative terminals and measure the voltage at the
fuel pump connector (vehicle side).
NOTE: Do not disconnect the fuel pump connec
tor.
If the voltage is above the standard value, replace
the fuel pump.
If the voltage is below standard, check for a dam
aged harness, relay or a poor ground at the
pump.
Standard Value: 8.5V and over (93 RX-7)
10. After restoring the standard voltage value, measure
the fuel pump pressure (Max.). If pressure is not to
specification, replace the fuel pump.
11. If no trouble is found with the fuel pump and the
problem still exists, contact the Technical Hotline for
assistance.
P a g e 12 of 18
Date Issued: 9/16/93
9.5V and over (Other Models)
Revised:
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