Verification of Vehicle Repair
Verification Procedure
C002 Monitoring ADC - Malfunction
1.

Erase the DTC

2.

Wait 3 seconds and check the DTC

3.

IS THERE DTC P1639/C002 ?

YES

a.

Go to step 4

NO

a.

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

b.

Go to step 4

4.

Erase the DTC and wait 3 seconds

5.

Check the DTC

6.

IS THERE DTC P1639/C002 ?

YES

a.

Replace a known - good ECM if DTC is memorized.

NO

a.

System is O.K

note

Internal fault. There is no inspection of service possible for this diagnostic trouble code. Erase the fault memory and perform test drive. If the fault cannot be cancelled, temporarily install a good ECM and If problem is corrected, replace ECM.

C003 Monitoring ADC - Malfunction
7.

Erase the DTC

8.

Wait 3 seconds and check the DTC

9.

IS THERE DTC P1639/C003 ?

YES

a.

Go to step 4

NO

a.

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

b.

Go to step 4

10.

Erase the DTC and wait 3 seconds

11.

Check the DTC

12.

IS THERE DTC P1639/C003 ?

YES

a.

Replace a known - good ECM if DTC is memorized.

NO

a.

System is O.K

note

Internal fault. There is no inspection of service possible for this diagnostic trouble code. Erase the fault memory and perform test drive. If the fault cannot be cancelled, temporarily install a good ECM and If problem is corrected, replace ECM.

C004 Monitoring ADC - Malfunction
13.

Erase the DTC

14.

Wait 3 seconds and check the DTC

15.

IS THERE DTC P1639/C004 ?

YES

a.

Go to step 4

NO

a.

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

b.

Go to step 4

16.

Erase the DTC and wait 3 seconds

17.

Check the DTC

18.

IS THERE DTC P1639/C004 ?

YES

a.

Replace a known - good ECM if DTC is memorized.

NO

a.

System is O.K

note

Internal fault. There is no inspection of service possible for this diagnostic trouble code. Erase the fault memory and perform test drive. If the fault cannot be cancelled, temporarily install a good ECM and If problem is corrected, replace ECM.

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