Shut off while driving, code p1633

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Here are the diagnostics for this code. Take a look through them and let me know if you have questions.

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QB: DIAGNOSTIC TROUBLE CODE (DTC) P0603/P1605/P1633 - INTRODUCTION
QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 Introduction

QB: Pinpoint Tests See: Computers and Control Systems > Pinpoint Tests > QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 - Pinpoint Test



Note

This Pinpoint Test is intended to diagnose the following:

- Battery terminal condition
- Keep Alive Power (KAPWR) wire routing
- Harness circuit: KAPWR
- Powertrain Control Module (PCM) (12A650)

Pinpoint Test Schematics and Connectors


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QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633

QB: Introduction See: Computers and Control Systems > Pinpoint Tests > QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 - Introduction



QB1 CHECK BATTERY TERMINALS


Note:If KAPWR is interrupted to the PCM (that is, when a breakout box is installed or the battery is disconnected), DTC P0603/P1605 can be generated on the first power-up.

- Inspect the battery cables for loose connections, corrosion.
Are the battery terminal connections in good condition?
Yes

- KEY OFF. Battery terminals are OK. GO to QB2
.

No

- REPAIR battery terminals as necessary.



QB2 INSPECT ENGINE COMPARTMENT FOR PROPER WIRE ROUTING


- Inspect Electronic Engine Control (EC) System wiring for proximity to ignition components or wires.
Is wiring too close to ignition components or wires?
Yes

- REROUTE as necessary.

No

- Engine compartment wire routing is OK. GO to QB3
.



QB3 CHECK KEEP ALIVE POWER (KAPWR) TO PCM


Note:Refer to the PCM connector pin numbers in the beginning of this pinpoint test.

- Disconnect PCM.

- Measure voltage between KAPWR circuit at the PCM harness connector and ground.

- While observing digital multimeter, grasp the Electronic EC harness and wiggle, shake or bend a small section while working from the PCM to the dash panel.
Does the voltage reading indicate less than 10.5 volts?
Yes

- ISOLATE and REPAIR open circuit.

No

- No open in KAPWR harness circuit detected. GO to QB4
.



QB4 CHECK FOR REPEAT OF DTC P0603/P1605/P1633


- Reconnect PCM.

- Start engine and allow it to reach operating temperature.

- Run Key On Engine Off Self-Test.

- Retrieve Continuous Memory DTCs.
Is DTC P0603, P1605 or P1633 present?
Yes

- REPLACE the PCM.

No

- REPAIR other DTCs as necessary. If none, testing is complete.

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Let me know if this helps.

JOe

Sounds like bad battery cables to me. Is the cable insulation melted at the terminals? If so, new battery cables are needed.