Pinpoint Test Z: Intermittent: Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE HYBRID SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

This pinpoint test is intended to diagnose and isolate intermittent concerns for the following:

all electronic engine control (EEC) subsystems
transaxle assembly (7000)

This chart is used to determine which test to run for the suspect circuit. Corresponding parameter identifiers (PIDs) 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 PIDs can be found in Typical Diagnostic Reference Values .

PCM/TCM PIDS/SIGNALS

PCM/TCM PIDS/SIGNALS	Associated Circuit	Test Type
APP1	APPS1	input
APP2	APPS2	input
APP3	APPS3	input
BPO	BPO	input
BOO	BPP	input
Use DMM	BPS	input
Use DMM	CD-A (primary)	output
Use DMM	CD-B (primary)	output
Use DMM	CD-C (primary)	output
Use DMM	CD-D (primary)	output
CHT, CHT V	CHT	input
Use DMM	CKP(+)	input
Use DMM	CMP	input
Use DMM	CTO	output
Use DMM	DCF	input
EGRMC1	EGRMC1	output
EGRMC2	EGRMC2	output
EGRMC3	EGRMC3	output
EGRMC4	EGRMC4	output
EVAPCP	VMV	output
EVAPCV	CANV	output
EVBV	FVVV	output
FAN_DSD	FCV	output
FP	FP	output
FPM	FPM	input
FTP	FTP	input
G_SDN_B	GSDN	input
G_SDN_C	GSDN	input
GTQ_CMD	TGAC	input
GTQ_CMD*	TGAC	output
HTRCM11	HTR11	output
HTRCM12	HTR12	output
IAT	IAT	input
INJ1	INJ1	output
INJ2	INJ2	output
INJ3	INJ3	output
INJ4	INJ4	output
ISDN_1*	ISDN1	input
ISDN_2*	ISDN2	input
KEYST	ISP-R	input
KEYST	ISP-RS	input
KS1	KS(+)	input
MAF	MAF	input
MAP	MAP	input
MECP	MECP	output
M_SDN_B	GMSDN	input
M_SDN_C	GMSDN	input
MTQ_CMD	TMAC	input
MTQ_OUT*	TMAC	output
O2S11	HO2S11	input
O2S12	HO2S12	input
TACM (+)	TACM (+)	output
TACM (-)	TACM (-)	output
TP1	TP1	input
TP2	TP2	input
TR-A1	TR-A1	input
TR-A2	TR-A2	input
VPWR	VPWR	input
Use DMM	VREF	output