Underhood Electrical Center or Junction Block Replacement Fuse and Relay Block 1

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.
2. Remove the air cleaner assembly.
3. Remove the 2 bolts that hold fuse and relay block 1 (1) to the inner fender.
4. Carefully pull fuse and relay block 1 away from the inner fender and unsnap the lower cover.
5. Disconnect each of the harness connectors.
6. Remove fuse and relay block 1 from the vehicle.

1. Install fuse and relay block 1 (1) to the vehicle.
2. Connect each connector to fuse and relay block 1.
3. Install the lower cover.
4. Install fuse and relay block 1 to the inner fender. Secure with the 2 bolts.
5. Install the air cleaner assembly.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Connect the negative battery cable.

Tighten
Tighten the negative battery cable to 15 N·m (11 lb ft).

Underhood Electrical Center or Junction Block Replacement Engine Main Harness

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Remove the battery. Refer to Battery Replacement in Engine Electrical.
2. Remove the nut from the positive battery cables.
3. Separate the positive battery cable from the fuse and relay block 1 feed cable.
4. Remove the air cleaner assembly. Refer to Engine Controls.
5. Remove the 2 bolts that hold fuse and relay block 1 to the inner fender.
6. Carefully pull fuse and relay block 1 away from the inner fender and unsnap the lower cover.
7. Disconnect each of the harness connectors.
8. Remove fuse and relay block 1 from the vehicle.
9. Remove the bolt that holds fuse and relay block 2 to the inner fender.
10. Remove the bolts that hold fuse and relay block 3 to the front support.
11. Disable the SIR system. Refer to Disabling the SIR System in SIR.
12. Disconnect the following underhood electrical connectors:

•	The SIR left front discriminating sensor

•	The brake pressure modulating valve (BPMV)

•	The brake fluid level switch

•	The left front wheel speed sensor

•	The right headlamp

•	The left headlamp

•	The left turn/park lamp

•	The right turn/park lamp

•	The A/C refrigerant pressure switch

•	The ambient air temperature sensor

•

The horn

•	The main fan motor

•	The auxiliary fan motor

•	The windshield washer pump

•	The generator B+ wire

•

G103

•

G104

13. Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console.
14. Disconnect the following interior electrical connectors:

•	C1 from junction block 2

•	C2 from junction block 2

•	C2 from junction block 1

•

C200

•

C201

•

C202

•

C203

15. Remove the harness from the interior of the vehicle. Push the harness through the bulkhead grommet into the engine compartment.
16. Remove the bolts from the upper radiator support brackets.
17. Disconnect the harness retaining clips.
18. Lean the radiator assembly forward.
19. Note the routing of the harness. Remove the harness (2) from the vehicle.

1. Lean the radiator assembly forward.
2. Install the harness (2) to the vehicle.
3. Connect the harness retaining clips.
4. Install the bolts to the upper radiator support brackets.
5. Install the harness to the interior of the vehicle. Push the harness through the bulkhead grommet into the interior compartment.
6. Connect the following interior electrical connectors:

•	C1 to junction block 2

•	C2 to junction block 2

•	C2 to junction block 1

•

C200

•

C201

•

C202

•

C203

7. Install the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console.
8. Install fuse and relay block 3 to the front support. Secure with the 2 bolts.
9. Install fuse and relay block 2 to the inner fender. Secure with the 1 bolt.
10. Install fuse and relay block 1 to the vehicle.
11. Connect each of the harness connectors.
12. Install the lower cover.
13. Install fuse and relay block 1 to the inner fender. Secure with the 2 bolts.
14. Connect the following underhood electrical connectors:

•	The SIR left front discriminating sensor

•	The brake pressure modulating valve (BPMV)

•	The brake fluid level switch

•	The left front wheel speed sensor

•	The right headlamp

•	The left headlamp

•	The left turn/park lamp

•	The right turn/park lamp

•	The A/C refrigerant pressure switch

•	The ambient air temperature sensor

•

The horn

•	The main fan motor

•	The auxiliary fan motor

•	The windshield washer pump

•	The generator B+ wire

•

G103

•

G104

15. Install the air cleaner assembly.
16. Install the positive battery cable to the fuse and relay block 1 feed cable. Install the nut.
17. Enable the SIR system. Refer to Enabling the SIR System in SIR.
18. Install the battery. Refer to Battery Replacement in Engine Electrical.

Underhood Electrical Center or Junction Block Replacement Engine Accessory Harness

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Remove the battery. Refer to Battery Replacement in Engine Electrical.
2. Remove the air cleaner assembly.
3. Disconnect the following underhood electrical connectors:

•	The generator

•	The engine coolant temperature (ECT) sensor

•	The crankshaft position sensor

•	The mass air flow (MAF) sensor

•	The camshaft position sensor

•	The camshaft position actuator solenoid valve

•	The 4 fuel injectors

•	The idle air control (IAC) valve

•	The throttle position sensor (TPS)

•

G105

•

G106

•	The starter solenoid

•	The starter motor wire

•	The A/C compressor clutch (C101)

•	The battery positive wire from the battery positive terminal

•	The torque converter clutch solenoid (4-speed automatic only)

•	The park/neutral position (PNP) switch (automatic transaxle)

•	The reverse lamp switch (manual transaxle only)

•	The Evaporative Canister Vent Solenoid Valve

•	The Evaporative Canister Purge Solenoid Valve

•	The oil pressure switch

•	The 4 ignition coils

•	The vehicle speed sensor (VSS)

•	The underhood data link connector

•	The heated oxygen sensor 1

•	The knock sensor (C100)

•	The power steering pressure switch

•	C8 from fuse and relay block 1

•	C6 from fuse and relay block 1

•	C2 from fuse and relay block 1

4. Remove the front floor console. Refer to Front Floor Console Replacement in Instrument Panel, Gauges and Console.
5. Disconnect the following instrument panel electrical connectors:

•

C212

•

C213

•

C222

•

C223

•	Powertrain Control Module (PCM) C1

•

PCM C2

•

PCM C3

•

PCM C4

•	The noise suppressor filter

6. Remove the harness from the interior of the vehicle. Push the harness through the bulkhead grommet into the engine compartment.
7. Disconnect the harness retaining clips.
8. Remove the harness (1) from the vehicle.

1. Install the harness (1) to the vehicle.
2. Connect the harness retaining clips.
3. Install the harness to the interior of the vehicle. Push the harness through the bulkhead grommet into the interior of the vehicle.
4. Connect the following instrument panel electrical connectors:

•

C212

•

C213

•

C222

•

C223

•	Powertrain Control Module (PCM) C1

•

PCM C2

•

PCM C3

•

PCM C4

•	The noise suppressor filter

5. Install the front floor console. Refer to Front Floor Console Replacement in Instrument Panel, Gauges and Console.
6. Connect the following underhood electrical connectors:

•	The generator

•	The engine coolant temperature (ECT) sensor

•	The crankshaft position sensor

•	The mass air flow (MAF) sensor

•	The camshaft position sensor

•	The camshaft position actuator solenoid valve

•	The 4 fuel injectors

•	The idle air control (IAC) valve

•	The throttle position sensor (TPS)

•

G105

•

G106

•	The starter solenoid

•	The starter motor

•	The A/C compressor clutch (C101)

•	The battery positive wire from the battery positive terminal

•	The torque converter clutch solenoid (4-speed automatic only)

•	The park/neutral position (PNP) switch (automatic transaxle)

•	The reverse lamp switch (manual transaxle only)

•	The Evaporative Canister Vent Solenoid Valve

•	The Evaporative Canister Purge Solenoid Valve

•	The oil pressure switch

•	The 4 ignition coils

•	The vehicle speed sensor (VSS)

•	The underhood data link connector

•	The heated oxygen sensor 1

•	The knock sensor (C100)

•	The power steering pressure switch

•	C8 from fuse and relay block 1

•	C6 from fuse and relay block 1

•	C2 from fuse and relay block 1

7. Install the air cleaner assembly.
8. Install the battery. Refer to Battery Replacement in Engine Electrical.