Pinpoint Tests ZZ: Intermittent: Introduction

WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose and isolate intermittent concerns for all electronic engine control (EEC) subsystems.

This chart is used to determine which test to run for the suspect circuit. Parameter identifiers (PIDs) corresponding to each circuit are listed. Some circuits do not have an associated PID or the PID may not be available and has to be measured with a digital multimeter (DMM). More specific information on the PID can be found in Section 6, Reference Values.

PCM PIDS/SIGNALS

PCM/PIDS/SIGNALS	Associated Circuit	Test Type
AAT, AAT_V	AAT	Input
BOO1	BPP	Input
BOO2	BPS	Input
CAC_T, CAC_V, CACT_V	CACT	Input
CC VENTHOSE V	CRNKCSVT	Input
DPF_INP, DPF_INP_V	DPF12	Input
DPF V	DPF11	Input
EBP, EBP_V	EBP	Input
ECT, ECT1_V	ECT	Input
ECT2, ECT2_V	ECT2	Input
EGRCBV	EGRCBV	Output
EGRCIT_V, EGRTA	EGRT11	Input
EGRCOT_V, EGRTC	EGRT12	Input
EGRTP V	TP#2	Output
EGRVP	EGR	Input
EGT11, EGT11_V	EGT11	Input
EGT12, EGT12_V	EGT12	Input
EGT13, EGT13_V	EGT13	Input
EGT14, EGT14_V	EGT14	Input
EOT, EOT_V	EOT	Input
EXHAUST BRK	EBIS	Input
F PCV	FPCV	Output
F VCV	FVCV or FVR	Output
FANSS	FSS	Input
FLI	FLI	Input
FLP	FLP	Input
FP	FPC	Output
FPM	FPM#EFPR	Input
FRP	FRP	Input
FRT, FRT_V	FRT	Input
IAT11, IAT11_V	IAT	Input
LP FUEL SW	FDPS	Input
MAF, MAF_HZ	MAF	Input
MAP, MAP_V	MAP	Input
NOX11	CAN	Input
OSS SRC	OSS	Input
PTO STATUS	PTO	Input
REDUCT_PRES_V	RDP	Input
REDUCT RV DC	RDPGC	Output
REDUCT_TNK_LV	RDL1, RDL2, RDL3	Input
REDUCT TNK P	RDP	Input
REDUCT TNK T	RDT	Input
TCBP V	TCBP	Input
TURBO WGATE	TCWRVS	Output
VGT POS V	VGTP	Input
Use DMM	VPWR	Input
Use DMM	VREF	Output
WFS, WFS_V	WIF	Input