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Jaguar
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1998
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XJR (X308) V8-4.0L SC (AJ26)
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Repair and Diagnosis
>>
A L L Diagnostic Trouble Codes ( DTC )
>>
Testing and Inspection
>>
P Code Charts
>>
P1638
>>
K1: Retrieve DTCS
K1: Retrieve DTCS
NOTE:
Battery and or ECM disconnection prior to scanning will erase all data, ensure that the correct DTC is present.
Connect scan tool
Record DTC(s), freeze frame data and
GO to
K2
K2: 'J' Gate/ECM Connection Fault