DTC P258A-P258D

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Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.

  • Review Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DT

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You may preview the service manual table of contents by clicking below.

Service Manual Table of Contents

Document Tags

Document Title: DTC P258A-P258D

diagnostic

instructions

system

procedure

vacuum

pump

relay

control

circuit

voltage

information

short

ground

open

resistance

coil

brake

booster

description

power

detects

conditions

greater

type

reference

connector

testing

verify

ignition

disconnect

test

lamp

illuminate

terminal

normal

replace

harness

ohms

specified

range

jumper

wire

replacement

diagnostic procedure

short voltage

relay coil

booster pump

circuit system

power brake

booster vacuum

verify test

circuit terminal

terminal ground

lamp illuminates

test control

circuit tests

harness connector

test ohms

ground circuit

greater specified

brake booster pump

power brake booster

brake booster vacuum

booster vacuum pump

brake assist system

control module references

testing ignition disconnect

ignition disconnect vacuum

disconnect vacuum pump

verify test lamp

control circuit terminal

circuit terminal ground

test lamp illuminates

lamp illuminates test

illuminates test control

test control circuit

lamp illuminate test

circuit short ground

circuit tests normal

circuit fuse open

fuse open test

harness connector vacuum

connector vacuum pump

greater specified range

specified range test

fused jumper wire

normal test replace

test infinite resistance

specified range replace

jumper wire relay

wire relay terminal