Injector power supply appears to be inconsistent

Tiny
COWBO
  • MEMBER
  • 2001 TOYOTA COROLLA
  • 168,484 MILES
My 2001 toyota corolla starts and ceases after a few seconds, my obd shows p1310. But independent test of all the components show no sign of faults. What do I do.
Tuesday, January 10th, 2012 AT 4:34 PM

2 Replies

Tiny
JACKSPRAT
  • MEMBER
  • 46 POSTS
Is the car running on all cylinders when it starts? Try erasing the fault code and swapping the coils around, see if the fault code changes when you do this and let me know
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Tuesday, January 10th, 2012 AT 5:25 PM
Tiny
HMAC300
  • MECHANIC
  • 48,600 POSTS
Using¬ scan¬ tool, ¬ read¬ FREEZE¬ FRAME¬ data.¬ Freeze¬ frame¬ data¬ records¬ engine¬ conditions¬ when¬ malfunction¬ is¬ detected.

Diagnosis¬ &¬ Repair

1. Check¬ for¬ spark¬ at¬ misfiring¬ cylinder.¬ See¬ IGNITION¬ SYSTEMS¬ in¬ BASIC¬ DIAGNOSTIC¬ PROCEDURES ¬ 4 CYLINDER¬ article.¬ If¬ spark¬ exists, ¬ go¬ to¬ next¬ step.¬ If¬ spark¬ does¬ not¬ exist, ¬ go¬ to¬ step 4.
2. Check¬ for¬ open¬ or¬ short¬ in¬ Blue/Yellow¬ wire¬ between¬ ECM¬ and¬ ignition¬ coil/ignitor¬ No.¬ 3.¬ Also, ¬ check¬ for¬ open¬ or¬ short¬ in¬ Gray¬ wire¬ between¬ ECM¬ and¬ ignition¬ coil/ignitor¬ No.¬ 3.¬ See¬ WIRING¬ DIAGRAMS
article.¬ If¬ problem¬ exists, ¬ repair¬ wiring¬ as¬ necessary.¬ If¬ problem¬ does¬ not¬ exist, ¬ go¬ to¬ next¬ step.
3. Disconnect¬ ignition¬ coil/ignitor¬ No.¬ 3¬ harness¬ connector.¬ Access¬ ECM¬ below¬ stereo, ¬ behind¬ instrument¬ panel, ¬ just¬ in¬ front¬ of¬ center¬ console.¬ See Fig.¬ 2.¬ Turn¬ ignition¬ on.¬ Using¬ DVOM, ¬ backprobe¬ at¬ ECM
harness¬ connector.¬ On¬ models¬ with¬ 4A/T¬ transmission, ¬ measure¬ voltage¬ between¬ ground¬ and¬ terminal¬ No.¬ 25¬ (Blue/Yellow¬ wire)¬ at¬ ECM¬ harness¬ connector¬ E7.¬ See Fig.¬ 4.¬ On¬ models¬ without¬ 4A/T¬ transmission,
measure¬ voltage¬ between¬ ground¬ and¬ terminal¬ No.¬ 3¬ (Blue/Yellow¬ wire)¬ at¬ ECM¬ harness¬ connector¬ E4.¬ See Fig.¬ 5.¬ On¬ all¬ models, ¬ voltage¬ should¬ be¬ 4.5 5.5¬ volts.¬ If¬ voltage¬ is¬ as¬ specified, ¬ replace¬ ignition
coil/ignitor¬ No.¬ 3.¬ If¬ voltage¬ is¬ not¬ as¬ specified, ¬ replace¬ ECM.
4. Check¬ for¬ open¬ or¬ short¬ in¬ Gray¬ wire¬ between¬ ECM¬ and¬ ignition¬ coil/ignitor¬ No.¬ 3.¬ See¬ WIRING¬ DIAGRAMS¬ article.¬ If¬ problem¬ exists, ¬ repair¬ wiring¬ as¬ necessary.¬ If¬ problem¬ does¬ not¬ exist, ¬ go¬ to¬ next¬ step.
5. Access¬ ECM¬ below¬ stereo, ¬ behind¬ instrument¬ panel, ¬ just¬ in¬ front¬ of¬ center¬ console.¬ See Fig.¬ 2.¬ Using¬ DVOM, ¬ backprobe¬ ECM¬ harness¬ connector.¬ On¬ models¬ with¬ 4A/T¬ transmission, ¬ measure¬ voltage¬ between
ground¬ and¬ terminal¬ No.¬ 12¬ (Gray¬ wire)¬ at¬ ECM¬ harness¬ connector¬ E7¬ while¬ cranking¬ engine.¬ See Fig.¬ 4.¬ On¬ models¬ without¬ 4A/T¬ transmission, ¬ measure¬ voltage¬ between¬ ground¬ and¬ terminal¬ No.¬ 22¬ (Gray¬ wire)
at¬ ECM¬ harness¬ connector¬ E4¬ while¬ cranking¬ engine.¬ See Fig.¬ 5.¬ On¬ all¬ models, ¬ voltage¬ should¬ be¬.1 4.5¬ volts.¬ If¬ voltage¬ is¬ not¬ as¬ specified, ¬ go¬ to¬ next¬ step.¬ If¬ voltage¬ is¬ as¬ specified, ¬ go¬ to¬ step 7.
6. Disconnect¬ ignition¬ coil/ignitor¬ No.¬ 3¬ harness¬ connector.¬ Using¬ DVOM, ¬ backprobe¬ ECM¬ harness¬ connector.¬ On¬ models¬ with¬ 4A/T¬ transmission, ¬ measure¬ voltage¬ between¬ ground¬ and¬ terminal¬ No.¬ 12¬ (Gray¬ wire)
at¬ ECM¬ harness¬ connector¬ E7¬ while¬ cranking¬ engine.¬ On¬ models¬ without¬ 4A/T¬ transmission, ¬ measure¬ voltage¬ between¬ ground¬ and¬ terminal¬ No.¬ 22¬ (Gray¬ wire)¬ at¬ ECM¬ harness¬ connector¬ E4¬ while¬ cranking
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Tuesday, January 10th, 2012 AT 5:37 PM

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