Test Procedure
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- QD1 CHECK FOR PATS DTCS
- Repair all PATS DTCs before P1260. Refer to the appropriate ANTI-THEFT article for System Description, Operation and Self-Test.
- Are all PATS DTCs diagnosed?
Yes No GO to QD2. REFER to the appropriate ANTI-THEFT article to diagnose the PATS DTCs. - QD2 CHECK FOR ANY OTHER POWERTRAIN DTCS
- Repair all powertrain DTCs other than P1260.
- Are all other powertrain DTCs diagnosed?
Yes No GO to QD3. DISREGARD DTC P1260. DIAGNOSE all other powertrain DTCs. REFER toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS . - QD3 ATTEMPT TO START THE ENGINE
- Carry out a keep alive memory reset to clear DTC P1260. Refer toRESETTING THE KEEP ALIVE MEMORY (KAM) .
- Attempt to start the engine.
- Does the engine start?
Yes No No system concerns exist at the present time. For intermittent no start or start stalls, CHECK for intermittent PATS concerns. (PATS cannot stall the engine after 1 second of operation). For intermittent stalls while driving, VERIFY scan tool-to-PCM communication during the concern. If a PCM communication error occurs, the possible causes are: loss of PWR or GND to the PCM, damaged PCM PWR relay, or a damaged EEC PWR diode. REPAIR as necessary.
CLEAR the DTCs. REPEAT the self-test.DTC P1260 is not the cause of the No Start. REFER to STEP 2: NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX .