3.
Has a problem been found?
 | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection" procedure. |
Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Has a problem been found?
| ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
Ignition switch "OFF"
Refer to "Shop Manual" and disconnect engine room junction box connector.
Ignition switch "ON"
Measure voltage between Pin No. 2 (Power) terminal of engine room junction box harness connector and chassis ground.
Specification : B+
※ Fuel Pump will operate short period time as soon as ignition key is turned "ON"
Is the measured value within specification?
| ▶ Go to "Control Circuit Inpsection" procedure. |
| ▶ Repair open or short in power circuit between Fuel Pump Relay and Battery and then go to "Verification of vehicle Repair" procedure. |
Ignition switch "OFF"
Disconnect battery (-) cable.
Refer to "Shop Manual" and disconnect engine room junction box and ECM/PCM connector.
Measure the resistance between Pin No. 11 (Control) terminal of engine room junction box harness connector and Pin No. 38 (Fuel pump relay) terminal of ECM/PCM harness connector.
Specification : Approx. below 1 Ω
Is the measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair open or short in control circuit between Fuel pump relay and ECM/PCM and then go to "Verification of vehicle Repair" procedure. |
