Terminal and Connector Inspection
Check for Wiring Harness
1.

Check the battery condition, the battery must be in good condition and fuuly charged.(Battery case for cracks or leaks)

2.

Check the electrical connections at the battery, the negative battery cable to body the engine ground cables.

3.

Check the ECM 1(20A) fuse and the ECM 2 (20A) fuse at the dash fuse box.

4.

Clean the terminlals, if necessary, and lightly coat them with the grease.

5.

ARE THE FUSES O.K ? & ARE THE CONNECTIONS O.K ?

YES

a.

Go to "Signal Circuit Inspection" procedure

NO

a.

Repair as necessary and go to " Verification of Vehicle Repair " procedure

Signal Circuit Inspection
Problem Verification
1.

DTCs listed below are stored in the scan tool

P0560/C001_C002

2.

Check items with the scan tool and the multimeter

① Wiring harness inspection

② Battery voltage from alternator

3.

Specification

1)

Resitance : below 1 Ω for open in the wire

2)

Resitance : infinite for short to ground in the wire

3)

Voltage : below 0.5V for short to power in the wire

4)

Battery voltage : 8 ~ 15 V

note

Refer to the component and full circuit for connector configrations details

C001 : Battery Voltage - Low Input
4.

Erase the DTC

5.

Start the engine and check the battery voltage

6.

IS THERE A VOLTAGE 10 ~ 14 V ?

YES

a.

Intermittent failure, system is O.K at this time.

b.

Check for poor connections or loose wire at the ECM fuse 1, 2 and the ECM.

c.

Go to "Verification of Vehicle Repair" procedure

NO

a.

If the battery is out of specification, Go to "Component Inspection" procedure

b.

Go to step 4

7.

Check the ECM No.1(20A) fuse and the ECM No.2 (20A) fuse at the dash fuse box.

8.

ARE THERE FUSES O.K ?

YES

a.

Go to step 6

NO

a.

Repair open or short in the wire between the main relay terminal 1 and the ECM terminal 4 or 5/C230-1

b.

Repair short in the wire between the ECM fuse No. 1,2 (20A) and the heater relay No.1 terminal 4 or N0. 2 terminal 3.

c.

Replace the fuse if the fuse is broken

9.

Check the battery voltage of the ECM terminal 4/C230-1 to ground and the battery voltage of the ECM terminal 5/C230-1 to ground.

10.

IS THERE BATTERY VOLTAGE INDICATED ?

YES

a.

Go to "Verification of Vehicle Repair" procedure

NO

a.

Repair open or short in the wire for the ECM terminal 1,2,3/C230-1.

b.

Without supplying the battery voltage at the ECM terminal 4,5/C230-1, Go to "DTC 1616 main relay Mal" procedure for the check.

YES

a.

Go to "Verification of Vehicle Repair" procedure

C002 : Battery Voltage - High Input
11.

Connect the scan tool to the data link connector(DLC) and start the engine

12.

Fix the battery voltage current data and check

13.

IS THERE A BATTERY VOLTAGE 17.5 V OR HIGHER ?

YES

a.

If the battery voltage is overcharge condition, Go to "Component Inspection" procedure

NO

a.

Intermittent failure, system is O.K at this time.

b.

Go to "Verification of Vehicle Repair" procedure

YES

a.

Go to "Verification of Vehicle Repair" procedure

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