Protege L4-1839cc 1.8L DOHC (1990)
Fuel Pump Relay: Testing and Inspection
Fuel Pump Relay (Circuit Open Relay)
Perform tests in the order listed.
TEST 1 - RELAY SWITCHING FUNCTION CHECK
1.
Disconnect relay from its harness connector.
2.
Apply 12 volts and ground to the relay terminals listed below and check for the correct result.
12V/Grnd - CORRECT RESULT
"STA"/"E1"
-
Energizes relay, connects terminals "B" and "Fp" (continuity).
"B"/"Fc" -
Energizes relay, 12 volts becomes available at terminal Fp.
If results are not correct as described, replace relay.
TEST 2 - RELAY RESISTANCE CHECK
Resistance Check
Check resistance between the following relay terminals.
"STA"/"E1" -
Resistance...21 - 43 ohms
"B"/"Fc"
-
Resistance...109 - 226 ohms
"B"/"Fp"
-
Resistance...infinite (no continuity)
If results are not correct as described, replace relay.
TEST 3 - RELAY CIRCUIT (WIRING) CHECK
