Pinpoint Tests Z: Intermittent: Introduction

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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 Reference Values.

PCM PIDS/SIGNALS

PCM/PIDS/SIGNALS	Associated Circuit	Test Type
AAT	AAT	Input
APP1	APP1	Input
APP2	APP2	Input
BOO1	BPP	Input
BOO2	BPS	Input
Use DMM	CD A-H (primary)	Output
CAC_T	CACT	Input
CAC_V	CACT	Input
CACCT	CACCTS	Input
CACCT_V	CACCTS	Input
CHT	CHT	Input
CHT2	CHT2	Input
CKP	CKP	Input
CMP	CMP	Input
CPP_BOT	CPP-BT	Input
CPP/PNP	CPP	Input
CPP_PERCENT	CPP	Input
CRNKCAS_P_V	CKCP	Input
DPFE	DPFE	Input
EBP	EP	Input
ECT1, ECTS	ECT	Input
EGRMC1	EGRMC1	Output
EGRMC2	EGRMC2	Output
EGRMC3	EGRMC3	Output
EGRMC4	EGRMC4	Output
EGRMDSD	EGRMC	Output
EGRT12	EGRT12	Input
EGRVR	EGRVR	Output
EGT11	EGT11	Input
EGT21	EGT21	Input
Use DMM	EVAPLDP	Input
Use DMM	EVAPLDPPR	Input
Use DMM	EVAPLDPSV	Input
EVAPCP	EVAPCP	Input
EVAPCV	CANV	Output
EVAP_SW_VLV	FTIV	Input
EVBV	VBV	Input
FANDC	VDF	Output
FANSS	FANSS	Input
FANVAR	FCV	Input
FLI	FLI	Input
FLP	FLP	Input
FP	FP	Output
FP M	FPM	Input
FRP	FRP	Input
FRT	FRT	Input
FTP	FTP	Input
HFC	HFC	Output
HTR11	HTR11, UO2SHTR11	Input
HTR12	HTR12	Input
HTR21	HTR21, UO2SHTR21	Input
HTR22	HTR22	Input
IAT, IATS	IAT	Input
IAT12, IAT2	IAT2	Input
IMRC	IMRC	Output
IMRC1M	IMRC1	Input
IMRC2M	IMRC2	Input
IMTV	IMTV1	Output
INJ_F	INJ	Input
KNOCK_1	KS11	Input
KNOCK_2	KS12	Input
KNOCK_3	KS21	Input
KNOCK_4	KS22	Input
	LFC	Output
MAF, MAF V	MAF	Input
MAP V	MAP	Input
MFC	MFC	Output
O2S11, O2S11_CUR	HO2S11	Input
O2S12	HO2S12	Input
O2S21_CUR	UO2S21	Input
O2S22	HO2S22	Input
OSS	OSS	Input
PFP11	PFP11	Input
PFP21	PFP21	Input
PTO	PTO	Input
SCIP, SCIP V	TCIP	Input
TACM (+)	TACM (+)	Output
TACM (-)	TACM (-)	Output
TCBP	TCBP	Input
TCBP_V	TCBP	Input
TP	TP	Input
TP1	TP1	Input
TP2	TP2	Input
TURBO_BP1_STAT	TCBY	Output
TURBO_BP2_STAT	TCBY2	Output
TURBO_INLET, TURBO_INLET_V	TCIP	Input
TURBO_WGATE	TCWRVS	Output
TWGATE_STAT	TCWRVS	Output
VCTADV, VCT_INT_ACT1	VCT11	Input
VCTADV2, VCT_INT_ACT2	VCT21	Input
VCT_EXH_ACT1	VCT12	Input
VCT_EXH_ACT2	VCT22	Input
VPWR	VPWR	Input
Use DMM	VREF	Output
Use DMM	VSO	Output
VSS	VSS+	Input
WGATE_A_POS_PCT	TCWGP1	Input
WGATE_B_POS_PCT	TCWGP2	Input
WGATE_PRES	WVS	Input
WGATE_V	WVS	Input